{"id":2748,"date":"2026-08-10T07:21:00","date_gmt":"2026-08-10T07:21:00","guid":{"rendered":"https:\/\/shengxinfoundry.com\/?p=2748"},"modified":"2026-08-10T07:21:01","modified_gmt":"2026-08-10T07:21:01","slug":"cast-iron-manhole-cover-road-noise-design","status":"publish","type":"post","link":"https:\/\/shengxinfoundry.com\/ar\/cast-iron-manhole-cover-road-noise-design\/","title":{"rendered":"\u0643\u064a\u0641 \u064a\u0642\u0644\u0644 \u062a\u0635\u0645\u064a\u0645 \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0645\u0646 \u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0637\u0631\u064a\u0642"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u062a\u0639\u0627\u0644 \u0625\u0644\u0649 \u0645\u062f\u0648\u0646\u062a\u0646\u0627. \u0646\u062d\u0646 \u0634\u0631\u0643\u0629 \u0645\u0635\u0646\u0639\u0629 \u0645\u062d\u062a\u0631\u0641\u0629 \u0644\u0623\u063a\u0637\u064a\u0629 \u063a\u0631\u0641 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644 \u0648\u0627\u0644\u0631\u0627\u062a\u0646\u062c \u0627\u0644\u0645\u0631\u0643\u0628\u060c \u0648\u0646\u0648\u0641\u0631 \u0645\u0646\u062a\u062c\u0627\u062a \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0644\u0644\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u0628\u0644\u062f\u064a\u0629 \u0648\u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0641\u064a \u062c\u0645\u064a\u0639 \u0623\u0646\u062d\u0627\u0621 \u0627\u0644\u0639\u0627\u0644\u0645.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udc49 <a href=\"https:\/\/www.facebook.com\/profile.php?id=61579484674640\" target=\"_blank\" rel=\"noopener\">\u062a\u0627\u0628\u0639\u0648\u0646\u0627 \u0639\u0644\u0649 \u0627\u0644\u0641\u064a\u0633\u0628\u0648\u0643<\/a> \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0622\u062e\u0631 \u062a\u062d\u062f\u064a\u062b\u0627\u062a \u0627\u0644\u0645\u0646\u062a\u062c \u0648\u0623\u062e\u0628\u0627\u0631 \u0627\u0644\u0635\u0646\u0627\u0639\u0629 \u0648\u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0645\u0634\u0631\u0648\u0639.<\/li>\n\n\n\n<li>\ud83d\udc49 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0644\u062f\u064a\u0643 \u0623\u064a \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0644\u0644\u0645\u0634\u0631\u0648\u0639 \u0623\u0648 \u0643\u0646\u062a \u0628\u062d\u0627\u062c\u0629 \u0625\u0644\u0649 \u0639\u0631\u0636 \u0623\u0633\u0639\u0627\u0631\u060c \u0641\u0644\u0627 \u062a\u062a\u0631\u062f\u062f \u0641\u064a \u0630\u0644\u0643 <a href=\"https:\/\/shengxinfoundry.com\/ar\/contact-us\/\">\u0627\u062a\u0635\u0644 \u0628\u0641\u0631\u064a\u0642\u0646\u0627<\/a> \u0645\u0628\u0627\u0634\u0631\u0629 \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0627\u0644\u062f\u0639\u0645 \u0627\u0644\u0633\u0631\u064a\u0639 \u0648\u0627\u0644\u062d\u0644\u0648\u0644 \u0627\u0644\u0645\u062e\u0635\u0635\u0629.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0631\u062c\u0649 \u0645\u0648\u0627\u0635\u0644\u0629 \u0642\u0631\u0627\u0621\u0629 \u0645\u062f\u0648\u0646\u062a\u0646\u0627 \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0645\u0632\u064a\u062f \u0645\u0646 \u0627\u0644\u0623\u0641\u0643\u0627\u0631 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0648\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0627\u0644\u0645\u0646\u062a\u062c<\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>\u062c\u062f\u0648\u0644 \u0627\u0644\u0645\u062d\u062a\u0648\u064a\u0627\u062a<\/h2><nav><ul><li><a href=\"#article-highlights\">\u0623\u0628\u0631\u0632 \u0627\u0644\u0645\u0642\u0627\u0644\u0627\u062a<\/a><\/li><li><a href=\"#introduction\">\u0645\u0642\u062f\u0645\u0629<\/a><\/li><li><a href=\"#why-does-a-cast-iron-manhole-cover-become-noisy\">\u0644\u0645\u0627\u0630\u0627 \u064a\u0635\u0628\u062d \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0645\u0635\u0646\u0648\u0639 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0635\u0627\u062e\u0628\u064b\u0627\u061f<\/a><ul><li><a href=\"#excessive-clearance\">\u0627\u0644\u062a\u062e\u0644\u064a\u0635 \u0627\u0644\u0645\u0641\u0631\u0637<\/a><\/li><li><a href=\"#uneven-bearing-surfaces\">\u0623\u0633\u0637\u062d \u062a\u062d\u0645\u0644 \u063a\u064a\u0631 \u0645\u062a\u0633\u0627\u0648\u064a\u0629<\/a><\/li><li><a href=\"#frame-settlement\">\u062a\u0633\u0648\u064a\u0629 \u0627\u0644\u0625\u0637\u0627\u0631<\/a><\/li><li><a href=\"#incorrect-load-class\">\u0641\u0626\u0629 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u063a\u064a\u0631 \u0635\u062d\u064a\u062d\u0629<\/a><\/li><li><a href=\"#worn-cushioning-components\">\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u062a\u0648\u0633\u064a\u062f \u0627\u0644\u0628\u0627\u0644\u064a\u0629<\/a><\/li><\/ul><\/li><li><a href=\"#how-cast-iron-manhole-cover-design-controls-noise\">\u0643\u064a\u0641 \u064a\u062a\u062d\u0643\u0645 \u062a\u0635\u0645\u064a\u0645 \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0641\u064a \u0627\u0644\u0636\u0648\u0636\u0627\u0621<\/a><ul><li><a href=\"#precision-cover-to-frame-fit\">\u0645\u0644\u0627\u0621\u0645\u0629 \u062f\u0642\u064a\u0642\u0629 \u0645\u0646 \u0627\u0644\u063a\u0644\u0627\u0641 \u0625\u0644\u0649 \u0627\u0644\u0625\u0637\u0627\u0631<\/a><ul><li><a href=\"#matched-production-sets\">\u0645\u062c\u0645\u0648\u0639\u0627\u062a \u0627\u0644\u0625\u0646\u062a\u0627\u062c \u0627\u0644\u0645\u062a\u0637\u0627\u0628\u0642\u0629<\/a><\/li><\/ul><\/li><li><a href=\"#continuous-bearing-support\">\u062f\u0639\u0645 \u0627\u0644\u062a\u062d\u0645\u0644 \u0627\u0644\u0645\u0633\u062a\u0645\u0631<\/a><\/li><li><a href=\"#rubber-shock-absorbing-ring\">\u062d\u0644\u0642\u0629 \u0645\u0637\u0627\u0637\u064a\u0629 \u0645\u0645\u062a\u0635\u0629 \u0644\u0644\u0635\u062f\u0645\u0627\u062a<\/a><\/li><li><a href=\"#locking-and-anti-lifting-structure\">\u0647\u064a\u0643\u0644 \u0627\u0644\u0642\u0641\u0644 \u0648\u0627\u0644\u0645\u0636\u0627\u062f \u0644\u0644\u0631\u0641\u0639<\/a><\/li><li><a href=\"#adequate-frame-depth-and-rigidity\">\u0639\u0645\u0642 \u0627\u0644\u0625\u0637\u0627\u0631 \u0648\u0627\u0644\u0635\u0644\u0627\u0628\u0629 \u0627\u0644\u0643\u0627\u0641\u064a\u0629<\/a><\/li><li><a href=\"#anti-sagging-frame-design\">\u062a\u0635\u0645\u064a\u0645 \u0625\u0637\u0627\u0631 \u0645\u0636\u0627\u062f \u0644\u0644\u062a\u0631\u0647\u0644<\/a><\/li><\/ul><\/li><li><a href=\"#ductile-iron-and-noise-control-performance\">\u0623\u062f\u0627\u0621 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0631\u0646 \u0648\u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0636\u0648\u0636\u0627\u0621<\/a><\/li><li><a href=\"#noise-control-feature-comparison\">\u0645\u0642\u0627\u0631\u0646\u0629 \u0645\u064a\u0632\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0636\u0648\u0636\u0627\u0621<\/a><\/li><li><a href=\"#cast-iron-manhole-cover-vs-composite-cover-for-noise\">\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0645\u0642\u0627\u0628\u0644 \u063a\u0637\u0627\u0621 \u0645\u0631\u0643\u0628 \u0644\u0644\u0636\u0648\u0636\u0627\u0621<\/a><\/li><li><a href=\"#installation-factors-that-affect-road-noise\">\u0639\u0648\u0627\u0645\u0644 \u0627\u0644\u062a\u062b\u0628\u064a\u062a \u0627\u0644\u062a\u064a \u062a\u0624\u062b\u0631 \u0639\u0644\u0649 \u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0637\u0631\u064a\u0642<\/a><ul><li><a href=\"#level-the-supporting-surface\">\u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0633\u0637\u062d \u0627\u0644\u062f\u0627\u0639\u0645<\/a><\/li><li><a href=\"#support-the-entire-frame\">\u062f\u0639\u0645 \u0627\u0644\u0625\u0637\u0627\u0631 \u0628\u0623\u0643\u0645\u0644\u0647<\/a><\/li><li><a href=\"#protect-the-bearing-seat\">\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0645\u0642\u0639\u062f \u0627\u0644\u062d\u0627\u0645\u0644<\/a><\/li><li><a href=\"#align-the-surface-with-the-road\">\u0645\u062d\u0627\u0630\u0627\u0629 \u0627\u0644\u0633\u0637\u062d \u0645\u0639 \u0627\u0644\u0637\u0631\u064a\u0642<\/a><\/li><li><a href=\"#test-the-assembly-before-opening\">\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0642\u0628\u0644 \u0627\u0644\u0627\u0641\u062a\u062a\u0627\u062d<\/a><\/li><\/ul><\/li><li><a href=\"#how-to-diagnose-a-noisy-cast-iron-manhole-cover\">\u0643\u064a\u0641\u064a\u0629 \u062a\u0634\u062e\u064a\u0635 \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0635\u0627\u062e\u0628 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/a><ul><li><a href=\"#step-1-identify-the-sound\">\u0627\u0644\u062e\u0637\u0648\u0629 1: \u0627\u0644\u062a\u0639\u0631\u0641 \u0639\u0644\u0649 \u0627\u0644\u0635\u0648\u062a<\/a><\/li><li><a href=\"#step-2-check-for-rocking\">\u0627\u0644\u062e\u0637\u0648\u0629 2: \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0627\u0644\u062a\u0623\u0631\u062c\u062d<\/a><\/li><li><a href=\"#step-3-inspect-the-bearing-surfaces\">\u0627\u0644\u062e\u0637\u0648\u0629 3: \u0641\u062d\u0635 \u0627\u0644\u0623\u0633\u0637\u062d \u0627\u0644\u062d\u0627\u0645\u0644\u0629<\/a><\/li><li><a href=\"#step-4-measure-cover-and-frame-clearance\">\u0627\u0644\u062e\u0637\u0648\u0629 4: \u0642\u064a\u0627\u0633 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u062e\u0644\u0648\u0635 \u0627\u0644\u0625\u0637\u0627\u0631<\/a><\/li><li><a href=\"#step-5-inspect-the-foundation\">\u0627\u0644\u062e\u0637\u0648\u0629 5: \u0641\u062d\u0635 \u0627\u0644\u0645\u0624\u0633\u0633\u0629<\/a><\/li><\/ul><\/li><li><a href=\"#repair-adjust-or-replace\">\u0625\u0635\u0644\u0627\u062d \u0623\u0645 \u062a\u0639\u062f\u064a\u0644 \u0623\u0645 \u0627\u0633\u062a\u0628\u062f\u0627\u0644\u061f<\/a><\/li><li><a href=\"#how-to-specify-a-quieter-cast-iron-manhole-cover\">\u0643\u064a\u0641\u064a\u0629 \u062a\u062d\u062f\u064a\u062f \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0623\u0643\u062b\u0631 \u0647\u062f\u0648\u0621\u064b\u0627 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/a><ul><li><a href=\"#request-a-complete-drawing\">\u0627\u0637\u0644\u0628 \u0631\u0633\u0645\u064b\u0627 \u0643\u0627\u0645\u0644\u0627\u064b<\/a><\/li><li><a href=\"#confirm-the-exact-product-class\">\u062a\u0623\u0643\u064a\u062f \u0641\u0626\u0629 \u0627\u0644\u0645\u0646\u062a\u062c \u0628\u0627\u0644\u0636\u0628\u0637<\/a><\/li><li><a href=\"#include-maintenance-access\">\u062a\u0636\u0645\u064a\u0646 \u0627\u0644\u0648\u0635\u0648\u0644 \u0625\u0644\u0649 \u0627\u0644\u0635\u064a\u0627\u0646\u0629<\/a><\/li><\/ul><\/li><li><a href=\"#preventive-maintenance-for-quiet-road-performance\">\u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u0648\u0642\u0627\u0626\u064a\u0629 \u0644\u0623\u062f\u0627\u0621 \u0627\u0644\u0637\u0631\u064a\u0642 \u0627\u0644\u0647\u0627\u062f\u0626<\/a><\/li><li><a href=\"#conclusion\">\u062e\u0627\u062a\u0645\u0629<\/a><\/li><li><a href=\"#faq\">\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/a><ul><li><a href=\"#why-does-a-cast-iron-manhole-cover-make-noise-when-vehicles-pass-over-it\">\u0644\u0645\u0627\u0630\u0627 \u064a\u064f\u062d\u062f\u062b \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0645\u0635\u0646\u0648\u0639 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0636\u062c\u064a\u062c\u064b\u0627 \u0639\u0646\u062f \u0645\u0631\u0648\u0631 \u0627\u0644\u0645\u0631\u0643\u0628\u0627\u062a \u0641\u0648\u0642\u0647\u061f<\/a><\/li><li><a href=\"#can-a-rubber-ring-completely-stop-manhole-cover-noise\">\u0647\u0644 \u064a\u0645\u0643\u0646 \u0644\u0644\u062d\u0644\u0642\u0629 \u0627\u0644\u0645\u0637\u0627\u0637\u064a\u0629 \u0623\u0646 \u062a\u0648\u0642\u0641 \u0636\u062c\u064a\u062c \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u062a\u0645\u0627\u0645\u064b\u0627\u061f<\/a><\/li><li><a href=\"#should-a-noisy-cover-and-frame-be-replaced-together\">\u0647\u0644 \u064a\u062c\u0628 \u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u0635\u0627\u062e\u0628\u064a\u0646 \u0645\u0639\u064b\u0627\u061f<\/a><\/li><li><a href=\"#does-choosing-a-higher-load-class-automatically-make-the-cover-quieter\">\u0647\u0644 \u0627\u062e\u062a\u064a\u0627\u0631 \u0641\u0626\u0629 \u062a\u062d\u0645\u064a\u0644 \u0623\u0639\u0644\u0649 \u064a\u062c\u0639\u0644 \u0627\u0644\u063a\u0637\u0627\u0621 \u0623\u0643\u062b\u0631 \u0647\u062f\u0648\u0621\u064b\u0627 \u062a\u0644\u0642\u0627\u0626\u064a\u064b\u0627\u061f<\/a><\/li><li><a href=\"#what-information-is-needed-for-a-customized-low-noise-manhole-cover\">\u0645\u0627 \u0647\u064a \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 \u0644\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0645\u062e\u0635\u0635 \u0645\u0646\u062e\u0641\u0636 \u0627\u0644\u0636\u0648\u0636\u0627\u0621\u061f<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 id=\"article-highlights\" class=\"wp-block-heading\">\u0623\u0628\u0631\u0632 \u0627\u0644\u0645\u0642\u0627\u0644\u0627\u062a<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0641\u0647\u0645 \u0644\u0645\u0627\u0630\u0627 \u062a\u0646\u062a\u062c \u0628\u0639\u0636 \u0623\u063a\u0637\u064a\u0629 \u063a\u0631\u0641 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0636\u0648\u0636\u0627\u0621 \u062a\u0635\u0627\u062f\u0645\u064a\u0629 \u062a\u062d\u062a \u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631.<\/li>\n\n\n\n<li>\u062a\u0639\u0631\u0641 \u0639\u0644\u0649 \u0643\u064a\u0641\u064a\u0629 \u062a\u0623\u062b\u064a\u0631 \u0645\u0644\u0627\u0621\u0645\u0629 \u0627\u0644\u063a\u0637\u0627\u0621 \u0644\u0644\u0625\u0637\u0627\u0631 \u0639\u0644\u0649 \u0627\u0644\u062d\u0631\u0643\u0629 \u0648\u0627\u0644\u0627\u0647\u062a\u0632\u0627\u0632 \u0648\u0639\u0645\u0631 \u0627\u0644\u062e\u062f\u0645\u0629.<\/li>\n\n\n\n<li>\u0642\u0627\u0631\u0646 \u0645\u0644\u0627\u0645\u0633\u0629 \u0627\u0644\u0645\u0639\u062f\u0646 \u0627\u0644\u0635\u0644\u0628 \u0628\u062a\u0635\u0645\u064a\u0645\u0627\u062a \u0627\u0644\u062d\u0644\u0642\u0627\u062a \u0627\u0644\u0645\u0637\u0627\u0637\u064a\u0629 \u0648\u0627\u0644\u0648\u0633\u0627\u062f\u0629.<\/li>\n\n\n\n<li>\u062a\u0639\u0631\u0641 \u0639\u0644\u0649 \u0643\u064a\u0641\u064a\u0629 \u062a\u0623\u062b\u064a\u0631 \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0642\u0641\u0644 \u0648\u0623\u0633\u0637\u062d \u0627\u0644\u0645\u062d\u0627\u0645\u0644 \u0648\u0641\u0626\u0627\u062a \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0639\u0644\u0649 \u0627\u0644\u0627\u0633\u062a\u0642\u0631\u0627\u0631.<\/li>\n\n\n\n<li>\u062d\u062f\u062f \u0645\u0634\u0643\u0644\u0627\u062a \u0627\u0644\u062a\u062b\u0628\u064a\u062a \u0627\u0644\u062a\u064a \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u062c\u0639\u0644 \u0627\u0644\u063a\u0637\u0627\u0621 \u0627\u0644\u062c\u062f\u064a\u062f \u0635\u0627\u062e\u0628\u064b\u0627.<\/li>\n\n\n\n<li>\u0627\u0633\u062a\u062e\u062f\u0645 \u0642\u0627\u0626\u0645\u0629 \u0645\u0631\u062c\u0639\u064a\u0629 \u0644\u0644\u0641\u062d\u0635 \u0627\u0644\u0639\u0645\u0644\u064a \u0644\u062a\u0634\u062e\u064a\u0635 \u0627\u0644\u0623\u063a\u0637\u064a\u0629 \u0627\u0644\u0645\u062a\u0623\u0631\u062c\u062d\u0629 \u0623\u0648 \u0627\u0644\u062e\u0634\u062e\u0634\u0629.<\/li>\n\n\n\n<li>\u062a\u0639\u0631\u0641 \u0639\u0644\u0649 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0627\u0644\u062a\u064a \u064a\u062c\u0628 \u062a\u0642\u062f\u064a\u0645\u0647\u0627 \u0639\u0646\u062f \u062a\u062d\u062f\u064a\u062f \u0646\u0638\u0627\u0645 \u0637\u0631\u0642 \u0623\u0643\u062b\u0631 \u0647\u062f\u0648\u0621\u064b\u0627.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"introduction\" class=\"wp-block-heading\">\u0645\u0642\u062f\u0645\u0629<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacadvsavdsvb.jpg\" alt=\"\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u062f\u0627\u0626\u0631\u064a\" class=\"wp-image-381\" style=\"object-fit:cover;width:500px;height:500px\" srcset=\"https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacadvsavdsvb.jpg 800w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacadvsavdsvb-300x300.jpg 300w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacadvsavdsvb-150x150.jpg 150w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacadvsavdsvb-768x768.jpg 768w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacadvsavdsvb-600x600.jpg 600w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacadvsavdsvb-100x100.jpg 100w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0635\u0627\u062e\u0628 \u0647\u0648 \u0623\u0643\u062b\u0631 \u0645\u0646 \u0645\u062c\u0631\u062f \u0625\u0632\u0639\u0627\u062c \u0628\u0633\u064a\u0637. \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0634\u064a\u0631 \u0627\u0644\u062e\u0634\u062e\u0634\u0629 \u0627\u0644\u0645\u062a\u0643\u0631\u0631\u0629 \u0623\u0648 \u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0645\u0639\u062f\u0646\u064a \u0625\u0644\u0649 \u0627\u0644\u062d\u0631\u0643\u0629 \u0628\u064a\u0646 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0625\u0637\u0627\u0631\u060c \u0623\u0648 \u0627\u0644\u062f\u0639\u0645 \u063a\u064a\u0631 \u0627\u0644\u0645\u062a\u0633\u0627\u0648\u064a\u060c \u0623\u0648 \u0623\u0633\u0637\u062d \u0627\u0644\u0645\u062d\u0627\u0645\u0644 \u0627\u0644\u0628\u0627\u0644\u064a\u0629\u060c \u0623\u0648 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u063a\u064a\u0631 \u0627\u0644\u0635\u062d\u064a\u062d\u0629\u060c \u0623\u0648 \u062a\u0633\u0648\u064a\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a\u060c \u0623\u0648 \u0641\u0626\u0629 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u063a\u064a\u0631 \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0646 \u064a\u0646\u0642\u0644 \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0645\u0635\u0646\u0648\u0639 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0645\u0635\u0645\u0645 \u062c\u064a\u062f\u064b\u0627 \u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0645\u0631\u0643\u0628\u0627\u062a \u0639\u0628\u0631 \u0627\u0644\u0625\u0637\u0627\u0631 \u0625\u0644\u0649 \u0647\u064a\u0643\u0644 \u0627\u0644\u0637\u0631\u064a\u0642 \u0627\u0644\u0645\u062d\u064a\u0637 \u062f\u0648\u0646 \u062d\u0631\u0643\u0629 \u0645\u0641\u0631\u0637\u0629. \u062a\u0639\u062f \u062c\u0648\u062f\u0629 \u0627\u0644\u0645\u0648\u0627\u062f \u0623\u0645\u0631\u064b\u0627 \u0645\u0647\u0645\u064b\u0627\u060c \u0644\u0643\u0646 \u0627\u0644\u0623\u062f\u0627\u0621 \u0627\u0644\u0647\u0627\u062f\u0626 \u064a\u0639\u062a\u0645\u062f \u0623\u064a\u0636\u064b\u0627 \u0639\u0644\u0649 \u062f\u0642\u0629 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0648\u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0648\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0642\u0641\u0644 \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0648\u0627\u0644\u0635\u064a\u0627\u0646\u0629.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u062a\u062a\u0639\u0627\u0645\u0644 \u0633\u0644\u0637\u0627\u062a \u0627\u0644\u0637\u0631\u0642 \u0627\u0644\u0633\u0631\u064a\u0639\u0629 \u0627\u0644\u0645\u062d\u0644\u064a\u0629 \u0628\u0634\u0643\u0644 \u0631\u0648\u062a\u064a\u0646\u064a \u0645\u0639 \u0627\u0644\u0623\u063a\u0637\u064a\u0629 \u0627\u0644\u0633\u0627\u0626\u0628\u0629 \u0648\u0627\u0644\u0645\u062a\u0623\u0631\u062c\u062d\u0629 \u0648\u0627\u0644\u063a\u0627\u0631\u0642\u0629 \u0648\u0627\u0644\u0635\u0627\u062e\u0628\u0629 \u0628\u0627\u0639\u062a\u0628\u0627\u0631\u0647\u0627 \u0639\u064a\u0648\u0628\u064b\u0627 \u0641\u064a \u0627\u0644\u0637\u0631\u064a\u0642 \u062a\u062a\u0637\u0644\u0628 \u0627\u0644\u062a\u0641\u062a\u064a\u0634. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u064a\u062d\u062f\u062f \u0645\u062c\u0644\u0633 \u0645\u0642\u0627\u0637\u0639\u0629 \u0633\u0627\u0631\u064a \u0627\u0644\u0623\u063a\u0637\u064a\u0629 \u0627\u0644\u0633\u0627\u0626\u0628\u0629 \u0623\u0648 \u0627\u0644\u0645\u062a\u0623\u0631\u062c\u062d\u0629 \u0628\u0627\u0639\u062a\u0628\u0627\u0631\u0647\u0627 \u0645\u0634\u0643\u0644\u0627\u062a \u0645\u062d\u062a\u0645\u0644\u0629 \u062a\u062a\u0639\u0644\u0642 \u0628\u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0628\u0627\u0644\u0625\u0636\u0627\u0641\u0629 \u0625\u0644\u0649 \u0645\u0635\u0627\u062f\u0631 \u0644\u0644\u0636\u0648\u0636\u0627\u0621. \u0648\u0647\u0630\u0627 \u064a\u0648\u0636\u062d \u0633\u0628\u0628 \u0636\u0631\u0648\u0631\u0629 \u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u0627\u0644\u0636\u0648\u0636\u0627\u0621 \u0643\u0625\u0634\u0627\u0631\u0629 \u062a\u0634\u062e\u064a\u0635\u064a\u0629 \u0645\u0628\u0643\u0631\u0629 \u0648\u0644\u064a\u0633 \u0645\u062c\u0631\u062f \u0634\u0643\u0648\u0649 \u0635\u0648\u062a\u064a\u0629.<\/p>\n\n\n\n<h2 id=\"why-does-a-cast-iron-manhole-cover-become-noisy\" class=\"wp-block-heading\">\u0644\u0645\u0627\u0630\u0627 \u064a\u0635\u0628\u062d \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0645\u0635\u0646\u0648\u0639 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0635\u0627\u062e\u0628\u064b\u0627\u061f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062d\u062f\u062b \u0627\u0644\u0635\u0648\u062a \u0627\u0644\u0645\u0639\u062f\u0646\u064a \u0627\u0644\u0645\u0623\u0644\u0648\u0641 \u0639\u0627\u062f\u0629\u064b \u0639\u0646\u062f\u0645\u0627 \u064a\u062a\u062d\u0631\u0643 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u064a\u0636\u0631\u0628 \u0627\u0644\u0625\u0637\u0627\u0631 \u0623\u062b\u0646\u0627\u0621 \u0645\u0631\u0648\u0631 \u0627\u0644\u0633\u064a\u0627\u0631\u0629 \u0641\u0648\u0642\u0647. \u0642\u062f \u064a\u0643\u0648\u0646 \u0627\u0644\u0635\u0648\u062a \u0642\u0635\u064a\u0631\u064b\u0627\u060c \u0644\u0643\u0646 \u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0623\u0633\u0627\u0633\u064a \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u062d\u062f\u062b \u0645\u0626\u0627\u062a \u0623\u0648 \u0622\u0644\u0627\u0641 \u0627\u0644\u0645\u0631\u0627\u062a \u0639\u0644\u0649 \u0637\u0631\u064a\u0642 \u0645\u0632\u062f\u062d\u0645.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0639\u062f\u0629 \u0634\u0631\u0648\u0637 \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u062e\u0644\u0642 \u0647\u0630\u0647 \u0627\u0644\u062d\u0631\u0643\u0629.<\/p>\n\n\n\n<h3 id=\"excessive-clearance\" class=\"wp-block-heading\">\u0627\u0644\u062a\u062e\u0644\u064a\u0635 \u0627\u0644\u0645\u0641\u0631\u0637<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0645\u0646 \u0627\u0644\u0636\u0631\u0648\u0631\u064a \u0648\u062c\u0648\u062f \u0641\u062c\u0648\u0629 \u0635\u063a\u064a\u0631\u0629 \u0641\u064a \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u062d\u062a\u0649 \u064a\u0645\u0643\u0646 \u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0625\u0632\u0627\u0644\u062a\u0647. \u0648\u0645\u0639 \u0630\u0644\u0643\u060c \u0625\u0630\u0627 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\u062a\u0627\u0644\u0641\u064b\u0627 \u0623\u0648 \u062a\u0645 \u0648\u0636\u0639\u0647 \u0628\u0634\u0643\u0644 \u063a\u064a\u0631 \u0635\u062d\u064a\u062d \u0623\u0648 \u0645\u0644\u0648\u062b\u064b\u0627 \u0628\u0627\u0644\u062d\u0637\u0627\u0645\u060c \u064a\u062a\u0645 \u062a\u0642\u0644\u064a\u0644 \u0648\u0638\u064a\u0641\u0629 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0636\u0648\u0636\u0627\u0621.<\/p>\n\n\n\n<h2 id=\"how-cast-iron-manhole-cover-design-controls-noise\" class=\"wp-block-heading\">\u0643\u064a\u0641 \u064a\u062a\u062d\u0643\u0645 \u062a\u0635\u0645\u064a\u0645 \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0641\u064a \u0627\u0644\u0636\u0648\u0636\u0627\u0621<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0628\u062f\u0623 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0647\u0627\u062f\u0626 \u0628\u0645\u0633\u0627\u0631 \u062a\u062d\u0645\u064a\u0644 \u0645\u0633\u062a\u0642\u0631. \u064a\u062c\u0628 \u0623\u0646 \u064a\u0633\u062a\u0642\u0628\u0644 \u0627\u0644\u063a\u0637\u0627\u0621 \u062d\u0645\u0648\u0644\u0629 \u0627\u0644\u0639\u062c\u0644\u0629\u060c \u0648\u064a\u0646\u0642\u0644\u0647\u0627 \u0639\u0628\u0631 \u0623\u0633\u0637\u062d \u0627\u0644\u0645\u062d\u0627\u0645\u0644 \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629\u060c \u0648\u064a\u0648\u0632\u0639\u0647\u0627 \u0641\u064a \u0625\u0637\u0627\u0631 \u0645\u062b\u0628\u062a \u0628\u0634\u0643\u0644 \u0622\u0645\u0646.<\/p>\n\n\n\n<h3 id=\"precision-cover-to-frame-fit\" class=\"wp-block-heading\">\u0645\u0644\u0627\u0621\u0645\u0629 \u062f\u0642\u064a\u0642\u0629 \u0645\u0646 \u0627\u0644\u063a\u0644\u0627\u0641 \u0625\u0644\u0649 \u0627\u0644\u0625\u0637\u0627\u0631<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0625\u0637\u0627\u0631 \u0643\u0645\u062c\u0645\u0648\u0639\u0629 \u0645\u062a\u0648\u0627\u0641\u0642\u0629. \u064a\u062c\u0628 \u0623\u0646 \u062a\u0639\u0645\u0644 \u0623\u0628\u0639\u0627\u062f\u0647\u0627 \u0648\u062a\u0641\u0627\u0648\u062a\u0627\u062a\u0647\u0627 \u0648\u0623\u0639\u0645\u0627\u0642 \u0627\u0644\u0645\u062d\u0627\u0645\u0644 \u0648\u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0645\u0639\u064b\u0627.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0642\u062f \u062a\u0624\u062f\u064a \u0627\u0644\u0641\u062c\u0648\u0629 \u0627\u0644\u0636\u064a\u0642\u0629 \u062c\u062f\u064b\u0627 \u0625\u0644\u0649 \u0635\u0639\u0648\u0628\u0629 \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0623\u0648 \u0627\u0644\u0633\u0645\u0627\u062d \u0644\u0644\u063a\u0637\u0627\u0621 \u0628\u0627\u0644\u0631\u0628\u0637. \u064a\u0645\u0643\u0646 \u0644\u0644\u0641\u062c\u0648\u0629 \u0627\u0644\u0648\u0627\u0633\u0639\u0629 \u062c\u062f\u064b\u0627 \u0623\u0646 \u062a\u0633\u0645\u062d \u0628\u0627\u0644\u062d\u0631\u0643\u0629 \u0627\u0644\u062c\u0627\u0646\u0628\u064a\u0629 \u0648\u0627\u0644\u062a\u0623\u062b\u064a\u0631. \u0648\u0644\u0630\u0644\u0643 \u064a\u062c\u0628 \u0623\u0646 \u064a\u0648\u0627\u0632\u0646 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0628\u064a\u0646 \u0627\u0644\u0645\u0642\u0627\u0639\u062f \u0627\u0644\u0622\u0645\u0646\u0629 \u0648\u0627\u0644\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u0639\u0645\u0644\u064a\u0629.<\/p>\n\n\n\n<h4 id=\"matched-production-sets\" class=\"wp-block-heading\">\u0645\u062c\u0645\u0648\u0639\u0627\u062a \u0627\u0644\u0625\u0646\u062a\u0627\u062c \u0627\u0644\u0645\u062a\u0637\u0627\u0628\u0642\u0629<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u0645\u062e\u0635\u0635\u0629\u060c \u064a\u062c\u0628 \u0641\u062d\u0635 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0625\u0637\u0627\u0631 \u0643\u062a\u062c\u0645\u064a\u0639 \u0645\u0637\u0627\u0628\u0642 \u0642\u0628\u0644 \u0627\u0644\u062a\u0633\u0644\u064a\u0645. \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0624\u062f\u064a \u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u063a\u0637\u0627\u0621 \u0641\u0642\u0637 \u062f\u0648\u0646 \u0642\u064a\u0627\u0633 \u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u062d\u0627\u0644\u064a \u0625\u0644\u0649 \u0645\u0644\u0627\u0621\u0645\u0629 \u063a\u064a\u0631 \u0645\u0633\u062a\u0642\u0631\u0629 \u062d\u062a\u0649 \u0639\u0646\u062f\u0645\u0627 \u064a\u0628\u062f\u0648 \u0627\u0644\u0637\u0648\u0644 \u0623\u0648 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a \u0635\u062d\u064a\u062d\u064b\u0627.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Shengxin Foundry <a href=\"https:\/\/shengxinfoundry.com\/ar\/product\/cast-iron-manhole-cover-round\/\">\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u062f\u0627\u0626\u0631\u064a<\/a> \u064a\u0634\u062a\u0645\u0644 \u0639\u0644\u0649 \u062e\u064a\u0627\u0631\u0627\u062a \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0642\u0641\u0644 \u0648\u0627\u0645\u062a\u0635\u0627\u0635 \u0627\u0644\u0635\u062f\u0645\u0627\u062a \u0644\u0644\u0637\u0631\u0642 \u0627\u0644\u0628\u0644\u062f\u064a\u0629 \u0648\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0648\u0635\u0648\u0644 \u0625\u0644\u0649 \u0627\u0644\u0645\u0631\u0627\u0641\u0642.<\/p>\n\n\n\n<h3 id=\"continuous-bearing-support\" class=\"wp-block-heading\">\u062f\u0639\u0645 \u0627\u0644\u062a\u062d\u0645\u0644 \u0627\u0644\u0645\u0633\u062a\u0645\u0631<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0642\u0648\u0645 \u0627\u0644\u0633\u0637\u062d \u0627\u0644\u0639\u0631\u064a\u0636 \u0648\u0627\u0644\u0645\u062a\u0633\u0627\u0648\u064a \u0628\u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0642\u0648\u0629 \u0628\u0634\u0643\u0644 \u0623\u0643\u062b\u0631 \u0641\u0639\u0627\u0644\u064a\u0629 \u0645\u0646 \u0639\u062f\u062f \u0642\u0644\u064a\u0644 \u0645\u0646 \u0646\u0642\u0627\u0637 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0627\u0644\u0645\u0639\u0632\u0648\u0644\u0629. \u0643\u0645\u0627 \u0623\u0646\u0647 \u064a\u062d\u062f \u0645\u0646 \u0627\u0644\u062d\u0631\u0643\u0629 \u0627\u0644\u0631\u0623\u0633\u064a\u0629 \u0627\u0644\u062a\u064a \u062a\u0646\u062a\u062c \u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0627\u0635\u0637\u062f\u0627\u0645.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0646 \u064a\u062a\u062c\u0646\u0628 \u0627\u0644\u062a\u0635\u0645\u064a\u0645:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062d\u0648\u0627\u0641 \u0636\u064a\u0642\u0629 \u063a\u064a\u0631 \u0645\u062f\u0639\u0648\u0645\u0629<\/li>\n\n\n\n<li>\u0623\u0633\u0637\u062d \u0627\u0644\u062a\u0644\u0627\u0645\u0633 \u063a\u064a\u0631 \u0627\u0644\u0645\u0646\u062a\u0638\u0645\u0629<\/li>\n\n\n\n<li>\u0627\u0644\u062a\u062e\u0644\u064a\u0635 \u0627\u0644\u0645\u062d\u0644\u064a \u0627\u0644\u0645\u0641\u0631\u0637<\/li>\n\n\n\n<li>\u0645\u0635\u0627\u0626\u062f \u0627\u0644\u062d\u0637\u0627\u0645 \u0641\u064a \u0645\u0646\u0637\u0642\u0629 \u0627\u0644\u062c\u0644\u0648\u0633<\/li>\n\n\n\n<li>\u0632\u0648\u0627\u064a\u0627 \u0636\u0639\u064a\u0641\u0629 \u0641\u064a \u0627\u0644\u0625\u0637\u0627\u0631\u0627\u062a \u0627\u0644\u0645\u0631\u0628\u0639\u0629<\/li>\n\n\n\n<li>\u0646\u0642\u0627\u0637 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0627\u0644\u062a\u064a \u062a\u062a\u0622\u0643\u0644 \u0628\u0633\u0631\u0639\u0629<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0641\u062d\u0635 \u0627\u0644\u0623\u0633\u0637\u062d \u0627\u0644\u062d\u0627\u0645\u0644\u0629 \u0643\u062c\u0632\u0621 \u0645\u0646 \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u0631\u0648\u062a\u064a\u0646\u064a\u0629 \u0644\u0623\u0646 \u0627\u0644\u0635\u062f\u0623 \u0648\u0627\u0644\u0623\u0648\u0633\u0627\u062e \u0648\u0645\u0648\u0627\u062f \u0627\u0644\u0631\u0635\u064a\u0641 \u0648\u0627\u0644\u062d\u062c\u0627\u0631\u0629 \u0627\u0644\u0635\u063a\u064a\u0631\u0629 \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u062a\u062f\u0627\u062e\u0644 \u0645\u0639 \u0627\u0644\u062c\u0644\u0648\u0633 \u0627\u0644\u0645\u0633\u062a\u0642\u0631.<\/p>\n\n\n\n<h3 id=\"rubber-shock-absorbing-ring\" class=\"wp-block-heading\">\u062d\u0644\u0642\u0629 \u0645\u0637\u0627\u0637\u064a\u0629 \u0645\u0645\u062a\u0635\u0629 \u0644\u0644\u0635\u062f\u0645\u0627\u062a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0645\u0643\u0646 \u0644\u0644\u062d\u0644\u0642\u0629 \u0627\u0644\u0645\u0637\u0627\u0637\u064a\u0629 \u0623\u0648 \u0627\u0644\u0645\u0637\u0627\u0637\u064a\u0629 \u0641\u0635\u0644 \u0627\u0644\u0623\u0633\u0637\u062d \u0627\u0644\u0645\u0639\u062f\u0646\u064a\u0629 \u0648\u0627\u0645\u062a\u0635\u0627\u0635 \u062c\u0632\u0621 \u0645\u0646 \u0627\u0644\u0627\u0647\u062a\u0632\u0627\u0632 \u0627\u0644\u0646\u0627\u062a\u062c \u0639\u0646 \u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631. \u0648\u0642\u062f \u064a\u0642\u0644\u0644 \u0623\u064a\u0636\u064b\u0627 \u0645\u0646 \u0627\u0644\u062d\u0631\u0643\u0627\u062a \u0627\u0644\u0635\u063a\u064a\u0631\u0629 \u0627\u0644\u0646\u0627\u062a\u062c\u0629 \u0639\u0646 \u062a\u0641\u0627\u0648\u062a\u0627\u062a \u0627\u0644\u0625\u0646\u062a\u0627\u062c \u0623\u0648 \u062a\u0622\u0643\u0644 \u0627\u0644\u0633\u0637\u062d.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0646 \u062a\u0643\u0648\u0646 \u0627\u0644\u062d\u0644\u0642\u0629 \u0645\u062a\u0648\u0627\u0641\u0642\u0629 \u0645\u0639 \u0623\u062e\u062f\u0648\u062f \u0627\u0644\u0625\u0637\u0627\u0631 \u0648\u0627\u0644\u0628\u064a\u0626\u0629 \u0627\u0644\u0645\u062a\u0648\u0642\u0639\u0629. \u0627\u0644\u0634\u0631\u064a\u0637 \u0627\u0644\u0633\u0627\u0626\u0628 \u0627\u0644\u0645\u0648\u062c\u0648\u062f \u0623\u0633\u0641\u0644 \u0627\u0644\u063a\u0637\u0627\u0621 \u0644\u0627 \u064a\u0639\u0627\u062f\u0644 \u0645\u0643\u0648\u0646 \u0627\u0644\u062a\u0648\u0633\u064a\u062f \u0627\u0644\u0645\u0635\u0645\u0645 \u0647\u0646\u062f\u0633\u064a\u064b\u0627 \u0648\u0627\u0644\u0645\u062d\u062a\u0641\u0638 \u0628\u0647 \u0628\u0634\u0643\u0644 \u0622\u0645\u0646.<\/p>\n\n\n\n<h3 id=\"locking-and-anti-lifting-structure\" class=\"wp-block-heading\">\u0647\u064a\u0643\u0644 \u0627\u0644\u0642\u0641\u0644 \u0648\u0627\u0644\u0645\u0636\u0627\u062f \u0644\u0644\u0631\u0641\u0639<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0633\u0627\u0639\u062f \u0646\u0638\u0627\u0645 \u0627\u0644\u0642\u0641\u0644 \u0641\u064a \u0627\u0644\u062d\u062f \u0645\u0646 \u0627\u0644\u0631\u0641\u0639 \u0623\u0648 \u0627\u0644\u062f\u0648\u0631\u0627\u0646 \u0623\u0648 \u0627\u0644\u0625\u0632\u0627\u062d\u0629 \u063a\u064a\u0631 \u0627\u0644\u0645\u0642\u0635\u0648\u062f\u0629. \u0627\u0639\u062a\u0645\u0627\u062f\u064b\u0627 \u0639\u0644\u0649 \u0627\u0644\u062a\u0635\u0645\u064a\u0645\u060c \u0642\u062f \u062a\u0634\u062a\u0645\u0644 \u0627\u0644\u0623\u0642\u0641\u0627\u0644 \u0639\u0644\u0649 \u0645\u0633\u0627\u0645\u064a\u0631 \u0623\u0648 \u0623\u062c\u0647\u0632\u0629 \u0632\u0646\u0628\u0631\u0643\u064a\u0629 \u0623\u0648 \u0645\u0641\u0635\u0644\u0627\u062a \u0623\u0648 \u0645\u0643\u0648\u0646\u0627\u062a \u062a\u0642\u064a\u064a\u062f \u0645\u062f\u0645\u062c\u0629.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0644\u0627 \u064a\u0624\u062f\u064a \u0627\u0644\u0642\u0641\u0644 \u0625\u0644\u0649 \u0625\u062c\u0628\u0627\u0631 \u0627\u0644\u063a\u0637\u0627\u0621 \u063a\u064a\u0631 \u0627\u0644\u0645\u0633\u062a\u0648\u064a \u0639\u0644\u0649 \u0627\u0644\u062f\u062e\u0648\u0644 \u0641\u064a \u0625\u0637\u0627\u0631 \u0645\u0634\u0648\u0647. \u064a\u062c\u0628 \u0623\u0646 \u062a\u0643\u0648\u0646 \u0623\u0633\u0637\u062d \u0627\u0644\u0645\u062d\u0627\u0645\u0644 \u0648\u062f\u0639\u0645 \u0627\u0644\u0625\u0637\u0627\u0631 \u0645\u0633\u062a\u0642\u0631\u0629 \u0623\u0648\u0644\u0627\u064b\u061b \u062b\u0645 \u062a\u0648\u0641\u0631 \u0622\u0644\u064a\u0629 \u0627\u0644\u0642\u0641\u0644 \u062a\u062d\u0643\u0645\u064b\u0627 \u0625\u0636\u0627\u0641\u064a\u064b\u0627.<\/p>\n\n\n\n<h3 id=\"adequate-frame-depth-and-rigidity\" class=\"wp-block-heading\">\u0639\u0645\u0642 \u0627\u0644\u0625\u0637\u0627\u0631 \u0648\u0627\u0644\u0635\u0644\u0627\u0628\u0629 \u0627\u0644\u0643\u0627\u0641\u064a\u0629<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0646 \u064a\u0642\u0627\u0648\u0645 \u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u062a\u0634\u0648\u0647 \u0623\u062b\u0646\u0627\u0621 \u0646\u0642\u0644 \u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0645\u0631\u0648\u0631\u064a\u0629 \u0625\u0644\u0649 \u0627\u0644\u0647\u064a\u0643\u0644 \u0627\u0644\u062f\u0627\u0639\u0645. \u0642\u062f \u064a\u062a\u062d\u0631\u0643 \u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u0645\u0631\u0646 \u0623\u0648 \u0627\u0644\u0636\u062d\u0644 \u0628\u0634\u0643\u0644 \u0645\u0641\u0631\u0637 \u0645\u0639 \u0627\u0644\u0631\u0635\u064a\u0641 \u0648\u064a\u063a\u064a\u0631 \u0637\u0631\u064a\u0642\u0629 \u0648\u0636\u0639 \u0627\u0644\u063a\u0637\u0627\u0621.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0646 \u064a\u0623\u062e\u0630 \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0625\u0637\u0627\u0631 \u0641\u064a \u0627\u0644\u0627\u0639\u062a\u0628\u0627\u0631:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0641\u062a\u062d \u0648\u0627\u0636\u062d<\/li>\n\n\n\n<li>\u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0634\u0627\u0645\u0644\u0629<\/li>\n\n\n\n<li>\u062a\u062d\u0645\u0644 \u0627\u0644\u0639\u0645\u0642<\/li>\n\n\n\n<li>\u0627\u062a\u062c\u0627\u0647 \u0627\u0644\u0645\u0631\u0648\u0631<\/li>\n\n\n\n<li>\u0641\u0626\u0629 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0627\u0644\u0645\u062a\u0648\u0642\u0639\u0629<\/li>\n\n\n\n<li>\u0627\u0644\u062e\u0631\u0633\u0627\u0646\u0629 \u0627\u0644\u0645\u062d\u064a\u0637\u0629<\/li>\n\n\n\n<li>\u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u0625\u0631\u0633\u0627\u0621<\/li>\n\n\n\n<li>\u0639\u0645\u0642 \u0627\u0644\u062a\u062b\u0628\u064a\u062a<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0637\u0631\u0642 \u0627\u0644\u0645\u0631\u0628\u0639\u0629 \u0648\u0641\u062a\u062d\u0627\u062a \u0627\u0644\u0645\u0631\u0627\u0641\u0642\u060c Shengxin Foundry <a href=\"https:\/\/shengxinfoundry.com\/ar\/product\/square-cast-iron-manhole-cover\/\">\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0645\u0631\u0628\u0639<\/a> \u0645\u062a\u0648\u0641\u0631 \u0628\u0623\u0628\u0639\u0627\u062f \u062e\u0627\u0635\u0629 \u0628\u0627\u0644\u0645\u0634\u0631\u0648\u0639 \u0648\u062a\u0643\u0648\u064a\u0646\u0627\u062a \u0647\u064a\u0643\u0644\u064a\u0629.<\/p>\n\n\n\n<h3 id=\"anti-sagging-frame-design\" class=\"wp-block-heading\">\u062a\u0635\u0645\u064a\u0645 \u0625\u0637\u0627\u0631 \u0645\u0636\u0627\u062f \u0644\u0644\u062a\u0631\u0647\u0644<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0641\u064a \u0645\u0634\u0627\u0631\u064a\u0639 \u062a\u062c\u062f\u064a\u062f \u0627\u0644\u0637\u0631\u0642\u060c \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0633\u0627\u0639\u062f \u0627\u0644\u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0645\u0636\u0627\u062f \u0644\u0644\u062a\u0631\u0647\u0644 \u0623\u0648 \u0627\u0644\u0627\u0633\u062a\u064a\u0637\u0627\u0646 \u0641\u064a \u0625\u062f\u0627\u0631\u0629 \u0627\u0644\u0639\u0644\u0627\u0642\u0629 \u0628\u064a\u0646 \u0645\u062c\u0645\u0648\u0639\u0629 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0631\u0635\u064a\u0641. \u0627\u0644\u0647\u062f\u0641 \u0647\u0648 \u062a\u0642\u0644\u064a\u0644 \u0627\u0644\u0627\u0633\u062a\u064a\u0637\u0627\u0646 \u0627\u0644\u0645\u062d\u0644\u064a \u0648\u0627\u0644\u062d\u0641\u0627\u0638 \u0639\u0644\u0649 \u0645\u0633\u062a\u0648\u0649 \u0637\u0631\u064a\u0642 \u0623\u0643\u062b\u0631 \u0627\u062a\u0633\u0627\u0642\u064b\u0627.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u062a\u0639\u062a\u0645\u062f \u0627\u0644\u0646\u062a\u064a\u062c\u0629 \u0627\u0644\u0646\u0647\u0627\u0626\u064a\u0629 \u0639\u0644\u0649 \u0627\u0644\u0646\u0638\u0627\u0645 \u0627\u0644\u0643\u0627\u0645\u0644\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0625\u0637\u0627\u0631\u060c \u0648\u0647\u064a\u0643\u0644 \u0627\u0644\u0637\u0631\u064a\u0642\u060c \u0648\u0645\u0648\u0627\u062f \u0627\u0644\u0641\u0631\u0627\u0634\u060c \u0648\u062c\u0648\u062f\u0629 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u0629\u060c \u0648\u0627\u0644\u0636\u063a\u0637\u060c \u0648\u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a.<\/p>\n\n\n\n<h2 id=\"ductile-iron-and-noise-control-performance\" class=\"wp-block-heading\">\u0623\u062f\u0627\u0621 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0631\u0646 \u0648\u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0636\u0648\u0636\u0627\u0621<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u064a\u062a\u0645 \u062a\u0635\u0646\u064a\u0639 \u0623\u063a\u0637\u064a\u0629 \u0627\u0644\u0637\u0631\u0642 \u0627\u0644\u062d\u062f\u064a\u062b\u0629 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0631\u0646\u060c \u0627\u0644\u0645\u0639\u0631\u0648\u0641 \u0623\u064a\u0636\u064b\u0627 \u0628\u0627\u0633\u0645 \u0627\u0644\u062c\u0631\u0627\u0641\u064a\u062a \u0627\u0644\u0643\u0631\u0648\u064a \u0623\u0648 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0639\u0642\u062f\u064a. \u064a\u0634\u0643\u0644 \u0627\u0644\u062c\u0631\u0627\u0641\u064a\u062a \u0639\u0642\u064a\u062f\u0627\u062a \u0645\u0633\u062a\u062f\u064a\u0631\u0629 \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u0644\u0631\u0642\u0627\u0626\u0642 \u0627\u0644\u0645\u0648\u062c\u0648\u062f\u0629 \u0641\u064a \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0631\u0645\u0627\u062f\u064a \u0627\u0644\u062a\u0642\u0644\u064a\u062f\u064a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0648\u0641\u0631 \u0647\u064a\u0643\u0644 \u0627\u0644\u0645\u0627\u062f\u0629 \u0639\u0645\u0648\u0645\u064b\u0627 \u062a\u0623\u062b\u064a\u0631\u064b\u0627 \u0645\u062d\u0633\u0646\u064b\u0627 \u0648\u0645\u0642\u0627\u0648\u0645\u0629 \u0644\u0644\u062a\u0639\u0628. \u062a\u0645 \u0648\u0635\u0641 \u0627\u0644\u0645\u0639\u0627\u062f\u0646 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629 \u0641\u064a <a href=\"https:\/\/en.wikipedia.org\/wiki\/Ductile_iron\" target=\"_blank\" rel=\"noopener\">\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0648\u064a\u0643\u064a\u0628\u064a\u062f\u064a\u0627 \u0644\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0631\u0646<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u062d\u062f\u0647 \u0644\u0627 \u064a\u062c\u0639\u0644 \u0627\u0644\u063a\u0637\u0627\u0621 \u0647\u0627\u062f\u0626\u064b\u0627. \u064a\u062f\u0639\u0645 \u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644 \u062a\u0635\u0645\u064a\u0645\u064b\u0627 \u0647\u064a\u0643\u0644\u064a\u064b\u0627 \u0645\u062a\u064a\u0646\u064b\u0627\u060c \u0648\u0644\u0643\u0646 \u0644\u0627 \u064a\u0632\u0627\u0644 \u0645\u0646 \u0627\u0644\u0645\u0645\u0643\u0646 \u062d\u062f\u0648\u062b \u0627\u0644\u062d\u0631\u0643\u0629 \u0648\u0627\u0644\u0636\u0648\u0636\u0627\u0621 \u0639\u0646\u062f\u0645\u0627:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u063a\u0637\u0627\u0621 \u0644\u0627 \u064a\u062a\u0637\u0627\u0628\u0642 \u0645\u0639 \u0627\u0644\u0625\u0637\u0627\u0631<\/li>\n\n\n\n<li>\u0627\u0644\u0623\u0633\u0637\u062d \u0627\u0644\u062d\u0627\u0645\u0644\u0629 \u063a\u064a\u0631 \u0645\u062a\u0633\u0627\u0648\u064a\u0629<\/li>\n\n\n\n<li>\u0627\u0644\u0625\u0637\u0627\u0631 \u0645\u062f\u0639\u0648\u0645 \u0628\u0634\u0643\u0644 \u0633\u064a\u0626<\/li>\n\n\n\n<li>\u0641\u0626\u0629 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u063a\u064a\u0631 \u0635\u062d\u064a\u062d\u0629<\/li>\n\n\n\n<li>\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u062a\u0648\u0633\u064a\u062f \u062a\u0627\u0644\u0641\u0629<\/li>\n\n\n\n<li>\u062a\u0633\u0648\u064a\u0629 \u0627\u0644\u0637\u0631\u064a\u0642 \u062a\u063a\u064a\u0631 \u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u062a\u062b\u0628\u064a\u062a<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0623\u0641\u0636\u0644 \u0646\u062a\u064a\u062c\u0629 \u062a\u0623\u062a\u064a \u0645\u0646 \u0627\u0644\u062c\u0645\u0639 \u0628\u064a\u0646 \u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629 \u0648\u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u0645\u062a\u062d\u0643\u0645 \u0641\u064a\u0647.<\/p>\n\n\n\n<h2 id=\"noise-control-feature-comparison\" class=\"wp-block-heading\">\u0645\u0642\u0627\u0631\u0646\u0629 \u0645\u064a\u0632\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0636\u0648\u0636\u0627\u0621<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>\u062d\u0627\u0644\u0629 \u0627\u0644\u062a\u0635\u0645\u064a\u0645<\/th><th>\u0623\u062f\u0627\u0621 \u0627\u0644\u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0645\u062d\u062a\u0645\u0644<\/th><th>\u0627\u0644\u0642\u0644\u0642 \u0627\u0644\u0631\u0626\u064a\u0633\u064a<\/th><th>\u0627\u0644\u0646\u0647\u062c \u0627\u0644\u0645\u0648\u0635\u0649 \u0628\u0647<\/th><\/tr><tr><td>\u063a\u0637\u0627\u0621 \u0645\u0639\u062f\u0646\u064a \u0641\u0636\u0641\u0627\u0636 \u0639\u0644\u0649 \u0625\u0637\u0627\u0631 \u063a\u064a\u0631 \u0645\u0633\u062a\u0648<\/td><td>\u0641\u0642\u064a\u0631<\/td><td>\u0627\u0644\u062a\u0623\u0631\u062c\u062d \u0648\u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0645\u062a\u0643\u0631\u0631<\/td><td>\u0641\u062d\u0635 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0648\u0623\u0633\u0637\u062d \u0627\u0644\u0645\u062d\u0627\u0645\u0644 \u0648\u062f\u0639\u0645 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\u064a\u0645\u0643\u0646 \u0644\u0641\u0626\u0629 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0623\u0639\u0644\u0649 \u062a\u0639\u0648\u064a\u0636 \u0627\u0644\u062f\u0639\u0645 \u0627\u0644\u0647\u064a\u0643\u0644\u064a \u063a\u064a\u0631 \u0627\u0644\u0645\u0643\u062a\u0645\u0644.<\/p>\n\n\n\n<h2 id=\"cast-iron-manhole-cover-vs-composite-cover-for-noise\" class=\"wp-block-heading\">\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0645\u0642\u0627\u0628\u0644 \u063a\u0637\u0627\u0621 \u0645\u0631\u0643\u0628 \u0644\u0644\u0636\u0648\u0636\u0627\u0621<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u062a\u062a\u0635\u0631\u0641 \u0627\u0644\u0623\u063a\u0637\u064a\u0629 \u0627\u0644\u0645\u0631\u0643\u0628\u0629 \u0648\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0631\u0646 \u0628\u0634\u0643\u0644 \u0645\u062e\u062a\u0644\u0641 \u0641\u064a \u0638\u0644 \u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631. \u064a\u0639\u062a\u0645\u062f \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0635\u062d\u064a\u062d \u0639\u0644\u0649 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u062d\u0645\u0644 \u0648\u0627\u0644\u0628\u064a\u0626\u0629 \u0648\u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0648\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0625\u0637\u0627\u0631 \u0648\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0634\u0631\u0648\u0639.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u0639\u0627\u0645\u0644<\/td><td>\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/td><td>\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0645\u0631\u0643\u0628<\/td><\/tr><tr><td>\u0648\u0632\u0646 \u0627\u0644\u0645\u0646\u062a\u062c<\/td><td>\u0623\u0639\u0644\u0649<\/td><td>\u0623\u0642\u0644 \u0639\u0645\u0648\u0645\u0627<\/td><\/tr><tr><td>\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0637\u0631\u0642 \u0627\u0644\u062b\u0642\u064a\u0644\u0629<\/td><td>\u0634\u0627\u0626\u0639 \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0639\u0646\u062f \u062a\u0642\u064a\u064a\u0645\u0647 \u0628\u0634\u0643\u0644 \u0635\u062d\u064a\u062d<\/td><td>\u064a\u0639\u062a\u0645\u062f \u0639\u0644\u0649 \u0641\u0626\u0629 \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u062a\u064a \u062a\u0645 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646\u0647\u0627<\/td><\/tr><tr><td>\u0636\u062c\u064a\u062c \u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0645\u0639\u0627\u062f\u0646<\/td><td>\u0645\u0645\u0643\u0646 \u0625\u0630\u0627 \u0643\u0627\u0646\u062a \u0627\u0644\u0645\u0642\u0627\u0639\u062f \u0641\u0636\u0641\u0627\u0636\u0629<\/td><td>\u0644\u0627 \u064a\u0648\u062c\u062f \u062a\u0623\u062b\u064a\u0631 \u0645\u0628\u0627\u0634\u0631 \u0639\u0644\u0649 \u0627\u0644\u063a\u0637\u0627\u0621 \u0627\u0644\u0645\u0639\u062f\u0646\u064a<\/td><\/tr><tr><td>\u062e\u064a\u0627\u0631\u0627\u062a \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0636\u0648\u0636\u0627\u0621<\/td><td>\u0645\u0642\u0627\u0639\u062f \u062f\u0642\u064a\u0642\u0629\u060c \u0623\u0642\u0641\u0627\u0644\u060c \u062d\u0644\u0642\u0627\u062a \u0645\u0637\u0627\u0637\u064a\u0629\u060c \u0645\u0643\u0648\u0646\u0627\u062a \u062a\u062e\u0645\u064a\u062f<\/td><td>\u062a\u062e\u0645\u064a\u062f \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0645\u0644\u0627\u0621\u0645\u0629 \u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0642\u0631<\/td><\/tr><tr><td>\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0623\u062b\u064a\u0631<\/td><td>\u0642\u0648\u064a \u0645\u0639 \u062f\u0631\u062c\u0629 \u0648\u062a\u0635\u0645\u064a\u0645 \u0645\u0646\u0627\u0633\u0628 \u0645\u0646 \u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644<\/td><td>\u064a\u0639\u062a\u0645\u062f \u0639\u0644\u0649 \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0648\u0627\u0644\u0631\u0627\u062a\u0646\u062c \u0648\u0627\u0644\u062a\u0639\u0632\u064a\u0632 \u0648\u0627\u0644\u062a\u0635\u0645\u064a\u0645<\/td><\/tr><tr><td>\u0633\u0644\u0648\u0643 \u0627\u0644\u062a\u0622\u0643\u0644<\/td><td>\u064a\u062a\u0637\u0644\u0628 \u062d\u0645\u0627\u064a\u0629 \u0648\u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u0633\u0637\u062d \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629<\/td><td>\u0644\u0627 \u064a\u0635\u062f\u0623 \u0645\u062b\u0644 \u0627\u0644\u0645\u0639\u062f\u0646 \u0627\u0644\u062d\u062f\u064a\u062f\u064a<\/td><\/tr><tr><td>\u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u0627\u0644\u062a\u062b\u0628\u064a\u062a<\/td><td>\u0642\u062f \u062a\u062a\u0637\u0644\u0628 \u0645\u0639\u062f\u0627\u062a \u0627\u0644\u0631\u0641\u0639<\/td><td>\u0623\u0633\u0647\u0644 \u0641\u064a \u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u0627\u0644\u0639\u062f\u064a\u062f \u0645\u0646 \u0627\u0644\u0623\u062d\u062c\u0627\u0645<\/td><\/tr><tr><td>\u062a\u0648\u0627\u0641\u0642 \u0627\u0644\u0625\u0637\u0627\u0631<\/td><td>\u064a\u062c\u0628 \u0623\u0646 \u062a\u062a\u0637\u0627\u0628\u0642 \u0645\u0639 \u0623\u0628\u0639\u0627\u062f \u0627\u0644\u063a\u0637\u0627\u0621 \u0628\u062f\u0642\u0629<\/td><td>\u064a\u062a\u0637\u0644\u0628 \u0623\u064a\u0636\u064b\u0627 \u0625\u0637\u0627\u0631\u064b\u0627 \u0645\u062a\u0648\u0627\u0641\u0642\u064b\u0627<\/td><\/tr><tr><td>\u0623\u0633\u0627\u0633 \u0623\u0641\u0636\u0644 \u0627\u062e\u062a\u064a\u0627\u0631<\/td><td>\u0641\u0626\u0629 \u0627\u0644\u062d\u0645\u0648\u0644\u0629 \u0648\u0638\u0631\u0648\u0641 \u0627\u0644\u0637\u0631\u064a\u0642 \u0648\u0627\u0644\u0647\u064a\u0643\u0644 \u0648\u0627\u0644\u0648\u062b\u0627\u0626\u0642<\/td><td>\u0641\u0626\u0629 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0648\u0627\u0644\u062a\u0639\u0631\u0636 \u0648\u0627\u0644\u0647\u064a\u0643\u0644 \u0648\u0627\u0644\u0648\u062b\u0627\u0626\u0642<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Shengxin Foundry <a href=\"https:\/\/shengxinfoundry.com\/ar\/round-manhole-cover-material-choice-guide-cast-iron-vs-composite-solutions\/\">\u062f\u0644\u064a\u0644 \u0645\u0648\u0627\u062f \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0645\u0633\u062a\u062f\u064a\u0631\u0629<\/a> \u064a\u0648\u0641\u0631 \u0645\u0632\u064a\u062f\u064b\u0627 \u0645\u0646 \u0627\u0644\u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u064a\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0631\u0646 \u0648\u0627\u0644\u0645\u062d\u0627\u0644\u064a\u0644 \u0627\u0644\u0645\u0631\u0643\u0628\u0629.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0643\u0648\u0646 \u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0645\u0631\u0643\u0628\u0629 \u0645\u0641\u064a\u062f\u0629 \u0639\u0646\u062f\u0645\u0627 \u064a\u0643\u0648\u0646 \u0627\u0644\u0648\u0632\u0646 \u0627\u0644\u0645\u0646\u062e\u0641\u0636 \u0648\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0622\u0643\u0644 \u0648\u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0645\u0639\u062f\u0646\u064a \u0623\u0645\u0631\u064b\u0627 \u0645\u0647\u0645\u064b\u0627. \u064a\u0638\u0644 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0630\u0627 \u0623\u0647\u0645\u064a\u0629 \u0643\u0628\u064a\u0631\u0629 \u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0637\u0631\u0642 \u0627\u0644\u062b\u0642\u064a\u0644\u0629 \u0639\u0646\u062f\u0645\u0627 \u064a\u062a\u0645 \u062a\u0635\u0645\u064a\u0645 \u0648\u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0627\u0644\u0643\u0627\u0645\u0644 \u0628\u0634\u0643\u0644 \u0635\u062d\u064a\u062d.<\/p>\n\n\n\n<h2 id=\"installation-factors-that-affect-road-noise\" class=\"wp-block-heading\">\u0639\u0648\u0627\u0645\u0644 \u0627\u0644\u062a\u062b\u0628\u064a\u062a \u0627\u0644\u062a\u064a \u062a\u0624\u062b\u0631 \u0639\u0644\u0649 \u0636\u0648\u0636\u0627\u0621 \u0627\u0644\u0637\u0631\u064a\u0642<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"900\" height=\"650\" src=\"https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascasasvqavdeqa.jpg\" alt=\"\" class=\"wp-image-2301\" style=\"object-fit:cover;width:600px;height:500px\" srcset=\"https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascasasvqavdeqa.jpg 900w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascasasvqavdeqa-300x217.jpg 300w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascasasvqavdeqa-768x555.jpg 768w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascasasvqavdeqa-600x433.jpg 600w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0624\u062f\u064a \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0630\u064a \u062a\u0645 \u0627\u062e\u062a\u0628\u0627\u0631\u0647 \u0641\u064a \u0627\u0644\u0645\u0635\u0646\u0639 \u0625\u0644\u0649 \u062d\u062f\u0648\u062b \u0636\u0648\u0636\u0627\u0621 \u0628\u0639\u062f \u0627\u0644\u062a\u062b\u0628\u064a\u062a \u0625\u0630\u0627 \u0644\u0645 \u064a\u062a\u0645 \u0625\u0639\u062f\u0627\u062f \u0627\u0644\u0623\u0633\u0627\u0633 \u0623\u0648 \u0627\u0644\u0625\u0637\u0627\u0631 \u0623\u0648 \u0627\u0644\u0631\u0635\u064a\u0641 \u0627\u0644\u0645\u062d\u064a\u0637 \u0628\u0634\u0643\u0644 \u0635\u062d\u064a\u062d.<\/p>\n\n\n\n<h3 id=\"level-the-supporting-surface\" class=\"wp-block-heading\">\u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0633\u0637\u062d \u0627\u0644\u062f\u0627\u0639\u0645<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0646 \u064a\u0631\u062a\u0643\u0632 \u0627\u0644\u0625\u0637\u0627\u0631 \u0639\u0644\u0649 \u0623\u0633\u0627\u0633 \u0645\u0633\u062a\u0642\u0631 \u0648\u0645\u0633\u062a\u0648\u064a. \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0633\u0645\u062d \u062f\u0639\u0645 \u0627\u0644\u0646\u0642\u0627\u0637 \u0623\u0648 \u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u063a\u064a\u0631 \u0627\u0644\u0645\u0645\u0644\u0648\u0621\u0629 \u0623\u0633\u0641\u0644 \u0627\u0644\u0625\u0637\u0627\u0631 \u0628\u0627\u0644\u062d\u0631\u0643\u0629 \u0648\u0627\u0644\u062a\u0634\u0642\u0642 \u0641\u064a \u0646\u0647\u0627\u064a\u0629 \u0627\u0644\u0645\u0637\u0627\u0641.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0639\u0644\u0649 \u0627\u0644\u0642\u0627\u0626\u0645\u064a\u0646 \u0639\u0644\u0649 \u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0627\u062a\u0628\u0627\u0639 \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0634\u0631\u0648\u0639 \u0641\u064a\u0645\u0627 \u064a\u062a\u0639\u0644\u0642 \u0628\u0645\u0648\u0627\u062f \u0627\u0644\u0641\u0631\u0627\u0634\u060c \u0648\u0642\u0648\u0629 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u0629\u060c \u0648\u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629\u060c \u0648\u0627\u0644\u062a\u062b\u0628\u064a\u062a\u060c \u0648\u0648\u0642\u062a \u0625\u0639\u0627\u062f\u0629 \u0641\u062a\u062d \u0627\u0644\u0637\u0631\u064a\u0642.<\/p>\n\n\n\n<h3 id=\"support-the-entire-frame\" class=\"wp-block-heading\">\u062f\u0639\u0645 \u0627\u0644\u0625\u0637\u0627\u0631 \u0628\u0623\u0643\u0645\u0644\u0647<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0644\u0627 \u064a\u0633\u062f \u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u0641\u062c\u0648\u0627\u062a \u063a\u064a\u0631 \u0627\u0644\u0645\u062f\u0639\u0648\u0645\u0629. \u0639\u0646\u062f\u0645\u0627 \u062a\u0639\u0628\u0631 \u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631 \u0627\u0644\u062a\u062b\u0628\u064a\u062a\u060c \u064a\u0645\u0643\u0646 \u0644\u0644\u0623\u0642\u0633\u0627\u0645 \u063a\u064a\u0631 \u0627\u0644\u0645\u062f\u0639\u0648\u0645\u0629 \u0623\u0646 \u062a\u0646\u062b\u0646\u064a \u0623\u0648 \u062a\u0633\u062a\u0642\u0631 \u0628\u0634\u0643\u0644 \u0645\u062e\u062a\u0644\u0641 \u0639\u0646 \u0628\u0642\u064a\u0629 \u0627\u0644\u0645\u062c\u0645\u0648\u0639\u0629.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0639\u062f \u0627\u0644\u062f\u0639\u0645 \u0627\u0644\u0643\u0627\u0645\u0644 \u0644\u0644\u0645\u062d\u064a\u0637 \u0645\u0647\u0645\u064b\u0627 \u0628\u0634\u0643\u0644 \u062e\u0627\u0635 \u062d\u0648\u0644 \u0627\u0644\u0625\u0637\u0627\u0631\u0627\u062a \u0627\u0644\u0645\u0631\u0628\u0639\u0629 \u0648\u0627\u0644\u0641\u062a\u062d\u0627\u062a \u0627\u0644\u0643\u0628\u064a\u0631\u0629 \u0627\u0644\u0648\u0627\u0636\u062d\u0629.<\/p>\n\n\n\n<h3 id=\"protect-the-bearing-seat\" class=\"wp-block-heading\">\u062d\u0645\u0627\u064a\u0629 \u0627\u0644\u0645\u0642\u0639\u062f \u0627\u0644\u062d\u0627\u0645\u0644<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0644\u0627 \u064a\u0646\u0628\u063a\u064a \u0623\u0646 \u062a\u0628\u0642\u0649 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u0629 \u0623\u0648 \u0627\u0644\u0623\u0633\u0641\u0644\u062a \u0623\u0648 \u0627\u0644\u062d\u0635\u0649 \u0623\u0648 \u062d\u0637\u0627\u0645 \u0627\u0644\u0628\u0646\u0627\u0621 \u0639\u0644\u0649 \u0633\u0637\u062d \u0627\u0644\u0645\u062d\u0645\u0644. \u062d\u062a\u0649 \u0627\u0644\u062c\u0633\u064a\u0645\u0627\u062a \u0627\u0644\u0635\u0644\u0628\u0629 \u0627\u0644\u0635\u063a\u064a\u0631\u0629 \u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0645\u0646\u0639 \u0627\u0644\u063a\u0637\u0627\u0621 \u0645\u0646 \u0627\u0644\u062c\u0644\u0648\u0633 \u0628\u0627\u0644\u062a\u0633\u0627\u0648\u064a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u062a\u0646\u0638\u064a\u0641 \u0645\u0646\u0637\u0642\u0629 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0648\u0641\u062d\u0635\u0647\u0627 \u0642\u0628\u0644 \u0627\u0644\u0642\u0628\u0648\u0644 \u0627\u0644\u0646\u0647\u0627\u0626\u064a.<\/p>\n\n\n\n<h3 id=\"align-the-surface-with-the-road\" class=\"wp-block-heading\">\u0645\u062d\u0627\u0630\u0627\u0629 \u0627\u0644\u0633\u0637\u062d \u0645\u0639 \u0627\u0644\u0637\u0631\u064a\u0642<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062a\u0639\u0631\u0636 \u0627\u0644\u063a\u0637\u0627\u0621 \u0627\u0644\u0645\u0631\u062a\u0641\u0639 \u062c\u062f\u064b\u0627 \u0623\u0648 \u0627\u0644\u0645\u0646\u062e\u0641\u0636 \u062c\u062f\u064b\u0627 \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0631\u0635\u064a\u0641 \u0644\u062a\u0623\u062b\u064a\u0631 \u0625\u0636\u0627\u0641\u064a \u0639\u0644\u0649 \u0627\u0644\u0639\u062c\u0644\u0629. \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0624\u062f\u064a \u0627\u062e\u062a\u0644\u0627\u0641 \u0627\u0644\u0627\u0631\u062a\u0641\u0627\u0639 \u0623\u064a\u0636\u064b\u0627 \u0625\u0644\u0649 \u0639\u062f\u0645 \u0627\u0644\u0631\u0627\u062d\u0629 \u0648\u0627\u0644\u0636\u0648\u0636\u0627\u0621 \u0648\u0645\u062e\u0627\u0648\u0641 \u062a\u062a\u0639\u0644\u0642 \u0628\u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0637\u0631\u064a\u0642.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0646 \u064a\u062a\u0628\u0639 \u0627\u0644\u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0646\u0647\u0627\u0626\u064a \u062a\u0641\u0627\u0648\u062a\u0627\u062a \u0627\u0644\u062a\u062b\u0628\u064a\u062a \u0627\u0644\u0645\u0639\u062a\u0645\u062f\u0629 \u0648\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0635\u0631\u0641.<\/p>\n\n\n\n<h3 id=\"test-the-assembly-before-opening\" class=\"wp-block-heading\">\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0642\u0628\u0644 \u0627\u0644\u0627\u0641\u062a\u062a\u0627\u062d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0642\u0628\u0644 \u0627\u0644\u0633\u0645\u0627\u062d \u0644\u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0637\u0631\u064a\u0642\u060c \u064a\u062c\u0628 \u0639\u0644\u0649 \u0641\u0631\u064a\u0642 \u0627\u0644\u0645\u0634\u0631\u0648\u0639 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0630\u0644\u0643<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0633\u062a\u0642\u0631\u0627\u0631 \u0627\u0644\u063a\u0637\u0627\u0621<\/li>\n\n\n\n<li>\u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0625\u0637\u0627\u0631<\/li>\n\n\n\n<li>\u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u0642\u0641\u0644<\/li>\n\n\n\n<li>\u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0641\u0635\u0644\u0629<\/li>\n\n\n\n<li>\u0645\u0648\u0642\u0641 \u062d\u0644\u0642\u0629 \u0627\u0644\u062a\u0648\u0633\u064a\u062f<\/li>\n\n\n\n<li>\u0645\u062d\u0627\u0630\u0627\u0629 \u0627\u0644\u0633\u0637\u062d<\/li>\n\n\n\n<li>\u063a\u064a\u0627\u0628 \u0627\u0644\u062a\u0623\u0631\u062c\u062d<\/li>\n\n\n\n<li>\u0648\u0636\u0639 \u0639\u0644\u0627\u0645\u0629 \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u0635\u062d\u064a\u062d\u0629<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0639\u062f \u0627\u0644\u0641\u062d\u0635 \u0627\u0644\u062e\u0627\u0636\u0639 \u0644\u0644\u0631\u0642\u0627\u0628\u0629 \u0623\u0643\u062b\u0631 \u0645\u0648\u062b\u0648\u0642\u064a\u0629 \u0645\u0646 \u0627\u0646\u062a\u0638\u0627\u0631 \u0636\u0648\u0636\u0627\u0621 \u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631 \u0644\u0644\u0643\u0634\u0641 \u0639\u0646 \u0645\u0634\u0643\u0644\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a.<\/p>\n\n\n\n<h2 id=\"how-to-diagnose-a-noisy-cast-iron-manhole-cover\" class=\"wp-block-heading\">\u0643\u064a\u0641\u064a\u0629 \u062a\u0634\u062e\u064a\u0635 \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0635\u0627\u062e\u0628 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"1000\" height=\"700\" src=\"https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/sxacacvavaadvs.jpg\" alt=\"\" class=\"wp-image-1205\" style=\"object-fit:cover;width:600px;height:400px\" srcset=\"https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/sxacacvavaadvs.jpg 1000w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/sxacacvavaadvs-300x210.jpg 300w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/sxacacvavaadvs-768x538.jpg 768w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/sxacacvavaadvs-600x420.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0625\u062c\u0631\u0627\u0621 \u062a\u0634\u062e\u064a\u0635 \u0627\u0644\u0636\u0648\u0636\u0627\u0621 \u0641\u0642\u0637 \u0628\u0639\u062f \u0627\u062a\u062e\u0627\u0630 \u0627\u0644\u062a\u062f\u0627\u0628\u064a\u0631 \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u0629 \u0644\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631 \u0648\u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0645\u0648\u0642\u0639.<\/p>\n\n\n\n<h3 id=\"step-1-identify-the-sound\" class=\"wp-block-heading\">\u0627\u0644\u062e\u0637\u0648\u0629 1: \u0627\u0644\u062a\u0639\u0631\u0641 \u0639\u0644\u0649 \u0627\u0644\u0635\u0648\u062a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u062a\u0634\u064a\u0631 \u0627\u0644\u0646\u0642\u0631\u0629 \u0627\u0644\u0645\u0639\u062f\u0646\u064a\u0629 \u0627\u0644\u062d\u0627\u062f\u0629 \u0625\u0644\u0649 \u062a\u0623\u062b\u064a\u0631 \u0645\u0628\u0627\u0634\u0631 \u0628\u064a\u0646 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0625\u0637\u0627\u0631. \u0642\u062f \u062a\u0634\u064a\u0631 \u0627\u0644\u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u062a\u0643\u0631\u0631\u0629 \u0627\u0644\u0623\u0639\u0645\u0642 \u0625\u0644\u0649 \u062a\u0633\u0648\u064a\u0629 \u0627\u0644\u0625\u0637\u0627\u0631 \u0623\u0648 \u0641\u0634\u0644 \u0627\u0644\u0631\u0635\u064a\u0641 \u0623\u0648 \u0627\u0644\u062f\u0639\u0645 \u063a\u064a\u0631 \u0627\u0644\u0645\u0633\u062a\u0642\u0631.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0635\u0648\u062a \u0648\u062d\u062f\u0647 \u0644\u0627 \u064a\u0645\u0643\u0646\u0647 \u062a\u0623\u0643\u064a\u062f \u0627\u0644\u0633\u0628\u0628\u060c \u0644\u0643\u0646\u0647 \u064a\u0633\u0627\u0639\u062f \u0641\u064a \u062a\u0648\u062c\u064a\u0647 \u0627\u0644\u0641\u062d\u0635.<\/p>\n\n\n\n<h3 id=\"step-2-check-for-rocking\" class=\"wp-block-heading\">\u0627\u0644\u062e\u0637\u0648\u0629 2: \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0627\u0644\u062a\u0623\u0631\u062c\u062d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0642\u0645 \u0628\u062a\u0637\u0628\u064a\u0642 \u0636\u063a\u0637 \u0645\u062a\u062d\u0643\u0645 \u0641\u064a\u0647 \u0641\u064a \u0646\u0642\u0627\u0637 \u0645\u062e\u062a\u0644\u0641\u0629 \u0628\u0639\u062f \u0625\u063a\u0644\u0627\u0642 \u0627\u0644\u0645\u0646\u0637\u0642\u0629 \u0628\u0623\u0645\u0627\u0646. \u062a\u0634\u064a\u0631 \u0627\u0644\u062d\u0631\u0643\u0629 \u0639\u0646\u062f \u0632\u0627\u0648\u064a\u0629 \u0648\u0627\u062d\u062f\u0629 \u0623\u0648 \u0623\u0643\u062b\u0631 \u0625\u0644\u0649 \u0627\u062a\u0635\u0627\u0644 \u063a\u064a\u0631 \u0645\u062a\u0633\u0627\u0648\u064d \u0623\u0648 \u062a\u0634\u0648\u064a\u0647 \u0627\u0644\u0625\u0637\u0627\u0631.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0645\u0643\u0646 \u0623\u064a\u0636\u064b\u0627 \u0623\u0646 \u062a\u062a\u0645\u0627\u064a\u0644 \u0627\u0644\u0623\u063a\u0637\u064a\u0629 \u0627\u0644\u0645\u0633\u062a\u062f\u064a\u0631\u0629 \u0639\u0646\u062f\u0645\u0627 \u062a\u062a\u0622\u0643\u0644 \u0623\u0633\u0637\u062d\u0647\u0627 \u0627\u0644\u062d\u0627\u0645\u0644\u0629 \u0623\u0648 \u062a\u062a\u0644\u0648\u062b.<\/p>\n\n\n\n<h3 id=\"step-3-inspect-the-bearing-surfaces\" class=\"wp-block-heading\">\u0627\u0644\u062e\u0637\u0648\u0629 3: \u0641\u062d\u0635 \u0627\u0644\u0623\u0633\u0637\u062d \u0627\u0644\u062d\u0627\u0645\u0644\u0629<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0627\u0631\u0641\u0639 \u0627\u0644\u063a\u0637\u0627\u0621 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0645\u0639\u062f\u0627\u062a \u0627\u0644\u0645\u0639\u062a\u0645\u062f\u0629 \u0648\u0627\u0641\u062d\u0635:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0646\u0642\u0627\u0637 \u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0645\u0635\u0642\u0648\u0644\u0629<\/li>\n\n\n\n<li>\u0631\u0642\u0627\u0626\u0642 \u0627\u0644\u0635\u062f\u0623<\/li>\n\n\n\n<li>\u0645\u0639\u062f\u0646 \u0645\u0641\u0642\u0648\u062f<\/li>\n\n\n\n<li>\u0627\u0644\u0623\u0648\u0633\u0627\u062e \u0627\u0644\u0645\u0636\u063a\u0648\u0637\u0629<\/li>\n\n\n\n<li>\u0627\u0644\u062d\u062c\u0627\u0631\u0629 \u0623\u0648 \u0627\u0644\u0623\u0633\u0641\u0644\u062a<\/li>\n\n\n\n<li>\u0627\u0644\u0623\u062e\u0627\u062f\u064a\u062f \u0627\u0644\u062a\u0627\u0644\u0641\u0629<\/li>\n\n\n\n<li>\u062d\u0644\u0642\u0627\u062a \u062a\u0648\u0633\u064a\u062f \u063a\u064a\u0631 \u0645\u062a\u0633\u0627\u0648\u064a\u0629<\/li>\n\n\n\n<li>\u0627\u0644\u0634\u0642\u0648\u0642 \u062d\u0648\u0644 \u0627\u0644\u0625\u0637\u0627\u0631<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u063a\u0627\u0644\u0628\u064b\u0627 \u0645\u0627 \u062a\u0643\u0634\u0641 \u0627\u0644\u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u0645\u0635\u0642\u0648\u0644\u0629 \u0627\u0644\u0645\u0631\u0643\u0632\u0629 \u0639\u0646 \u0645\u0643\u0627\u0646 \u062d\u062f\u0648\u062b \u0627\u0644\u0627\u062a\u0635\u0627\u0644 \u0627\u0644\u0645\u062a\u0643\u0631\u0631.<\/p>\n\n\n\n<h3 id=\"step-4-measure-cover-and-frame-clearance\" class=\"wp-block-heading\">\u0627\u0644\u062e\u0637\u0648\u0629 4: \u0642\u064a\u0627\u0633 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u062e\u0644\u0648\u0635 \u0627\u0644\u0625\u0637\u0627\u0631<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0642\u0627\u0631\u0646 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0641\u0639\u0644\u064a\u0629 \u0645\u0639 \u0627\u0644\u0631\u0633\u0645 \u0623\u0648 \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0646\u062a\u062c. \u062a\u062d\u0642\u0642 \u0645\u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u062a\u0622\u0643\u0644 \u0642\u062f \u0623\u062f\u0649 \u0625\u0644\u0649 \u062a\u0648\u0633\u064a\u0639 \u0627\u0644\u0641\u062c\u0648\u0629 \u0623\u0648 \u0645\u0627 \u0625\u0630\u0627 \u0643\u0627\u0646 \u0627\u0644\u063a\u0637\u0627\u0621 \u0642\u062f \u062a\u0645 \u062a\u062b\u0628\u064a\u062a\u0647 \u0641\u064a \u0627\u0644\u0623\u0635\u0644 \u0641\u064a \u0625\u0637\u0627\u0631 \u063a\u064a\u0631 \u0645\u0637\u0627\u0628\u0642.<\/p>\n\n\n\n<h3 id=\"step-5-inspect-the-foundation\" class=\"wp-block-heading\">\u0627\u0644\u062e\u0637\u0648\u0629 5: \u0641\u062d\u0635 \u0627\u0644\u0645\u0624\u0633\u0633\u0629<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0627\u0628\u062d\u062b \u0639\u0646 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u0629 \u0627\u0644\u0645\u062a\u0634\u0642\u0642\u0629\u060c \u0623\u0648 \u0627\u0644\u062a\u0633\u0648\u064a\u0629 \u0627\u0644\u0645\u062d\u064a\u0637\u0629\u060c \u0623\u0648 \u0627\u0644\u0645\u0631\u0627\u0633\u064a \u0627\u0644\u0633\u0627\u0626\u0628\u0629\u060c \u0623\u0648 \u0641\u0635\u0644 \u0627\u0644\u0631\u0635\u064a\u0641\u060c \u0623\u0648 \u0627\u0644\u062d\u0631\u0643\u0629 \u0627\u0644\u0631\u0623\u0633\u064a\u0629. \u0625\u0630\u0627 \u062a\u062d\u0631\u0643 \u0627\u0644\u0625\u0637\u0627\u0631 \u0645\u0639 \u0633\u0637\u062d \u0627\u0644\u0637\u0631\u064a\u0642\u060c \u0641\u0645\u0646 \u063a\u064a\u0631 \u0627\u0644\u0645\u0631\u062c\u062d \u0623\u0646 \u064a\u0624\u062f\u064a \u062a\u063a\u064a\u064a\u0631 \u0627\u0644\u063a\u0637\u0627\u0621 \u0641\u0642\u0637 \u0625\u0644\u0649 \u062d\u0644 \u0627\u0644\u0645\u0634\u0643\u0644\u0629.<\/p>\n\n\n\n<h2 id=\"repair-adjust-or-replace\" class=\"wp-block-heading\">\u0625\u0635\u0644\u0627\u062d \u0623\u0645 \u062a\u0639\u062f\u064a\u0644 \u0623\u0645 \u0627\u0633\u062a\u0628\u062f\u0627\u0644\u061f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0635\u062d\u064a\u062d \u064a\u0639\u062a\u0645\u062f \u0639\u0644\u0649 \u0627\u0644\u0633\u0628\u0628 \u0627\u0644\u0623\u0633\u0627\u0633\u064a.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\u062d\u0627\u0644\u0629 \u0645\u0644\u062d\u0648\u0638\u0629<\/td><td>\u0627\u0644\u0625\u062c\u0631\u0627\u0621 \u0627\u0644\u0645\u062d\u062a\u0645\u0644<\/td><\/tr><tr><td>\u0627\u0644\u0623\u0648\u0633\u0627\u062e \u0623\u0648 \u0627\u0644\u062d\u062c\u0631 \u0639\u0644\u0649 \u0633\u0637\u062d \u064a\u062d\u0645\u0644 \u0627\u0644\u0635\u0648\u062a<\/td><td>\u0627\u0633\u062a\u0642\u0631\u0627\u0631 \u0627\u0644\u062a\u0646\u0638\u064a\u0641 \u0648\u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u0641\u062d\u0635<\/td><\/tr><tr><td>\u064a\u062a\u0645 \u0627\u0631\u062a\u062f\u0627\u0621 \u062d\u0644\u0642\u0629 \u062a\u0648\u0633\u064a\u062f \u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u0627\u0633\u062a\u0628\u062f\u0627\u0644<\/td><td>\u0642\u0645 \u0628\u062a\u062b\u0628\u064a\u062a \u0627\u0644\u0645\u0643\u0648\u0646 \u0627\u0644\u0628\u062f\u064a\u0644 \u0627\u0644\u0645\u0639\u062a\u0645\u062f<\/td><\/tr><tr><td>\u0645\u0643\u0648\u0646 \u0627\u0644\u0642\u0641\u0644 \u0641\u0636\u0641\u0627\u0636 \u0648\u0644\u0643\u0646 \u0627\u0644\u0635\u0628 \u0633\u0644\u064a\u0645<\/td><td>\u0627\u0644\u0625\u0635\u0644\u0627\u062d \u0648\u0641\u0642\u0627 \u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0645\u0646\u062a\u062c<\/td><\/tr><tr><td>\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u063a\u0637\u0627\u0621 \u0644\u0627 \u062a\u062a\u0637\u0627\u0628\u0642 \u0645\u0639 \u0627\u0644\u0625\u0637\u0627\u0631<\/td><td>\u0627\u0633\u062a\u0628\u062f\u0644 \u0628\u0645\u062c\u0645\u0648\u0639\u0629 \u0645\u062a\u0637\u0627\u0628\u0642\u0629 \u0645\u062a\u0648\u0627\u0641\u0642\u0629<\/td><\/tr><tr><td>\u062d\u0627\u0641\u0629 \u0627\u0644\u0645\u062d\u0645\u0644 \u0644\u0647\u0627 \u062a\u0622\u0643\u0644 \u0643\u0628\u064a\u0631<\/td><td>\u0627\u0633\u062a\u0628\u062f\u0644 \u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u0645\u062a\u0623\u062b\u0631\u0629<\/td><\/tr><tr><td>\u0627\u0644\u0625\u0637\u0627\u0631 \u0645\u062a\u0635\u062f\u0639 \u0623\u0648 \u0645\u0634\u0648\u0647<\/td><td>\u0627\u0633\u062a\u0628\u062f\u0644 \u0627\u0644\u0625\u0637\u0627\u0631 \u0648\u0627\u0641\u062d\u0635 \u0627\u0644\u0623\u0633\u0627\u0633<\/td><\/tr><tr><td>\u0644\u0642\u062f \u0641\u0634\u0644 \u0627\u0644\u062f\u0639\u0645 \u0627\u0644\u0645\u0644\u0645\u0648\u0633<\/td><td>\u0625\u0639\u0627\u062f\u0629 \u0628\u0646\u0627\u0621 \u0627\u0644\u0647\u064a\u0643\u0644 \u0627\u0644\u062f\u0627\u0639\u0645 \u0642\u0628\u0644 \u0627\u0644\u0627\u0633\u062a\u0628\u062f\u0627\u0644<\/td><\/tr><tr><td>\u0641\u0626\u0629 \u0627\u0644\u0645\u0646\u062a\u062c \u0623\u0642\u0644 \u0645\u0646 \u0627\u0644\u0637\u0644\u0628 \u0627\u0644\u0641\u0639\u0644\u064a \u0639\u0644\u0649 \u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631<\/td><td>\u062d\u062f\u062f \u0646\u0638\u0627\u0645\u064b\u0627 \u062a\u0645 \u062a\u0642\u064a\u064a\u0645\u0647 \u0628\u0634\u0643\u0644 \u0635\u062d\u064a\u062d<\/td><\/tr><tr><td>\u0627\u0644\u063a\u0637\u0627\u0621 \u0623\u0648 \u0627\u0644\u0625\u0637\u0627\u0631 \u0628\u0647 \u0634\u0642\u0648\u0642 \u0647\u064a\u0643\u0644\u064a\u0629<\/td><td>\u0639\u0632\u0644 \u0627\u0644\u0645\u0646\u0637\u0642\u0629 \u0648\u062a\u0631\u062a\u064a\u0628 \u0627\u0644\u0627\u0633\u062a\u0628\u062f\u0627\u0644 \u0627\u0644\u0645\u0647\u0646\u064a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0644\u0627 \u064a\u0646\u0628\u063a\u064a \u0627\u0644\u062a\u0639\u0627\u0645\u0644 \u0645\u0639 \u0645\u0648\u0627\u062f \u0627\u0644\u062a\u0639\u0628\u0626\u0629 \u0627\u0644\u0645\u0624\u0642\u062a\u0629 \u0643\u062d\u0644 \u0647\u0646\u062f\u0633\u064a \u062f\u0627\u0626\u0645. \u0642\u062f \u062a\u0642\u0648\u0645 \u0628\u0646\u0642\u0644 \u0623\u0648 \u0636\u063a\u0637 \u0623\u0648 \u0625\u062e\u0641\u0627\u0621 \u0639\u064a\u0628 \u0623\u0643\u062b\u0631 \u062e\u0637\u0648\u0631\u0629 \u0641\u064a \u0627\u0644\u0625\u0637\u0627\u0631 \u0623\u0648 \u0627\u0644\u0623\u0633\u0627\u0633.<\/p>\n\n\n\n<h2 id=\"how-to-specify-a-quieter-cast-iron-manhole-cover\" class=\"wp-block-heading\">\u0643\u064a\u0641\u064a\u0629 \u062a\u062d\u062f\u064a\u062f \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0623\u0643\u062b\u0631 \u0647\u062f\u0648\u0621\u064b\u0627 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u062a\u0633\u0627\u0639\u062f \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0648\u0627\u0636\u062d\u0629 \u0627\u0644\u0634\u0631\u0643\u0629 \u0627\u0644\u0645\u0635\u0646\u0639\u0629 \u0639\u0644\u0649 \u0627\u0644\u062a\u0648\u0635\u064a\u0629 \u0628\u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0645\u0646\u062a\u062c \u0648\u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u064a\u0646.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u062a\u0642\u062f\u064a\u0645 \u0627\u0644\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0627\u0644\u062a\u0627\u0644\u064a\u0629:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0645\u0648\u0642\u0639 \u0627\u0644\u062a\u062b\u0628\u064a\u062a<\/li>\n\n\n\n<li>\u0646\u0648\u0639 \u0627\u0644\u0637\u0631\u064a\u0642 \u0623\u0648 \u0627\u0644\u0631\u0635\u064a\u0641<\/li>\n\n\n\n<li>\u0627\u0644\u0645\u0631\u0643\u0628\u0627\u062a \u0627\u0644\u0645\u062a\u0648\u0642\u0639\u0629<\/li>\n\n\n\n<li>\u0641\u0626\u0629 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629<\/li>\n\n\n\n<li>\u0641\u062a\u062d \u0648\u0627\u0636\u062d<\/li>\n\n\n\n<li>\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0625\u0637\u0627\u0631<\/li>\n\n\n\n<li>\u0634\u0643\u0644 \u062f\u0627\u0626\u0631\u064a \u0623\u0648 \u0645\u0631\u0628\u0639<\/li>\n\n\n\n<li>\u0639\u0645\u0642 \u0627\u0644\u0625\u0637\u0627\u0631<\/li>\n\n\n\n<li>\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0642\u0641\u0644<\/li>\n\n\n\n<li>\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0645\u0641\u0635\u0644\u0629<\/li>\n\n\n\n<li>\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u062d\u062f \u0645\u0646 \u0627\u0644\u0636\u0648\u0636\u0627\u0621<\/li>\n\n\n\n<li>\u062a\u0641\u0636\u064a\u0644 \u0627\u0644\u062d\u0644\u0642\u0629 \u0627\u0644\u0645\u0637\u0627\u0637\u064a\u0629 \u0623\u0648 \u0627\u0644\u062a\u0648\u0633\u064a\u062f<\/li>\n\n\n\n<li>\u0646\u0645\u0637 \u0627\u0644\u0633\u0637\u062d<\/li>\n\n\n\n<li>\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0637\u0644\u0627\u0621<\/li>\n\n\n\n<li>\u0643\u0645\u064a\u0629<\/li>\n\n\n\n<li>\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0645\u0634\u0631\u0648\u0639 \u0627\u0644\u0645\u0637\u0628\u0642<\/li>\n<\/ul>\n\n\n\n<h3 id=\"request-a-complete-drawing\" class=\"wp-block-heading\">\u0627\u0637\u0644\u0628 \u0631\u0633\u0645\u064b\u0627 \u0643\u0627\u0645\u0644\u0627\u064b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0646 \u064a\u0648\u0636\u062d \u0627\u0644\u0631\u0633\u0645 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0625\u0637\u0627\u0631 \u0648\u0627\u0644\u0641\u062a\u062d\u0629 \u0627\u0644\u0648\u0627\u0636\u062d\u0629 \u0648\u0639\u0645\u0642 \u0627\u0644\u0645\u062d\u0645\u0644 \u0648\u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0625\u062c\u0645\u0627\u0644\u064a\u0629 \u0648\u0623\u0633\u0637\u062d \u0627\u0644\u062a\u0644\u0627\u0645\u0633 \u0648\u0627\u0644\u0623\u0642\u0641\u0627\u0644 \u0648\u0627\u0644\u0645\u0641\u0635\u0644\u0627\u062a \u0648\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0642\u0627\u0628\u0644\u0629 \u0644\u0644\u0627\u0633\u062a\u0628\u062f\u0627\u0644.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0645\u0631\u0627\u062c\u0639\u0629 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0645\u062e\u0635\u0635\u0629 \u0642\u0628\u0644 \u0627\u0644\u0625\u0646\u062a\u0627\u062c \u0644\u0623\u0646 \u062a\u063a\u064a\u064a\u0631 \u0627\u0644\u0627\u0645\u062a\u062f\u0627\u062f \u0627\u0644\u0648\u0627\u0636\u062d \u0623\u0648 \u0627\u0644\u0633\u064f\u0645\u0643 \u0623\u0648 \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0625\u0637\u0627\u0631 \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0624\u062b\u0631 \u0639\u0644\u0649 \u0627\u0644\u0623\u062f\u0627\u0621.<\/p>\n\n\n\n<h3 id=\"confirm-the-exact-product-class\" class=\"wp-block-heading\">\u062a\u0623\u0643\u064a\u062f \u0641\u0626\u0629 \u0627\u0644\u0645\u0646\u062a\u062c \u0628\u0627\u0644\u0636\u0628\u0637<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0623\u0648\u0635\u0627\u0641 \u0645\u062b\u0644 \u201cheavy Doy\u201d \u0644\u064a\u0633\u062a \u0643\u0627\u0641\u064a\u0629 \u0641\u064a \u062d\u062f \u0630\u0627\u062a\u0647\u0627. \u0642\u0645 \u0628\u062a\u0623\u0643\u064a\u062f \u0641\u0626\u0629 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0627\u0644\u0645\u0637\u0628\u0642\u0629 \u0648\u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0645\u0646\u062a\u062c \u0648\u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0627\u0644\u0625\u0637\u0627\u0631 \u0648\u0627\u0644\u0648\u062b\u0627\u0626\u0642 \u0627\u0644\u062f\u0627\u0639\u0645\u0629.<\/p>\n\n\n\n<h3 id=\"include-maintenance-access\" class=\"wp-block-heading\">\u062a\u0636\u0645\u064a\u0646 \u0627\u0644\u0648\u0635\u0648\u0644 \u0625\u0644\u0649 \u0627\u0644\u0635\u064a\u0627\u0646\u0629<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u062c\u0628 \u0623\u0646 \u064a\u0633\u0645\u062d \u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0642\u0641\u0644 \u0627\u0644\u0647\u0627\u062f\u0626 \u0644\u0644\u0641\u0631\u0642 \u0627\u0644\u0645\u0639\u062a\u0645\u062f\u0629 \u0628\u0641\u062a\u062d \u0627\u0644\u063a\u0637\u0627\u0621 \u0628\u0623\u0645\u0627\u0646. \u064a\u062c\u0628 \u0623\u0646 \u062a\u0638\u0644 \u0646\u0642\u0627\u0637 \u0627\u0644\u0631\u0641\u0639 \u0648\u0627\u0644\u0645\u0641\u0635\u0644\u0627\u062a \u0648\u0627\u0644\u0623\u0642\u0641\u0627\u0644 \u0648\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0628\u062f\u064a\u0644\u0629 \u0645\u062a\u0627\u062d\u0629 \u0637\u0648\u0627\u0644 \u0641\u062a\u0631\u0629 \u0627\u0644\u062e\u062f\u0645\u0629.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Shengxin Foundry <a href=\"https:\/\/shengxinfoundry.com\/ar\/product\/\">\u0645\u0631\u0643\u0632 \u0627\u0644\u0645\u0646\u062a\u062c\u0627\u062a<\/a> \u064a\u0634\u062a\u0645\u0644 \u0639\u0644\u0649 \u0623\u063a\u0637\u064a\u0629 \u063a\u0631\u0641 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0631\u0646 \u0648\u0627\u0644\u0631\u0627\u062a\u0646\u062c \u0627\u0644\u0645\u0631\u0643\u0628\u060c \u0648\u0634\u0628\u0643\u0627\u062a \u0627\u0644\u0635\u0631\u0641 \u0627\u0644\u0635\u062d\u064a\u060c \u0648\u0623\u063a\u0637\u064a\u0629 \u062e\u0646\u0627\u062f\u0642 \u0627\u0644\u0643\u0627\u0628\u0644\u0627\u062a\u060c \u0648\u0645\u0644\u062d\u0642\u0627\u062a \u0644\u0645\u062e\u062a\u0644\u0641 \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0628\u0644\u062f\u064a\u0629 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class=\"wp-block-list\">\n<li>\u0635\u0648\u062a \u063a\u064a\u0631 \u0639\u0627\u062f\u064a \u062a\u062d\u062a \u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631<\/li>\n\n\n\n<li>\u063a\u0637\u0627\u0621 \u0647\u0632\u0627\u0632<\/li>\n\n\n\n<li>\u0623\u0642\u0641\u0627\u0644 \u0641\u0636\u0641\u0627\u0636\u0629<\/li>\n\n\n\n<li>\u0645\u0643\u0648\u0646\u0627\u062a \u0645\u0637\u0627\u0637\u064a\u0629 \u0645\u0641\u0642\u0648\u062f\u0629<\/li>\n\n\n\n<li>\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0645\u0635\u0642\u0648\u0644\u0629<\/li>\n\n\n\n<li>\u0627\u0644\u062a\u0622\u0643\u0644 \u0639\u0644\u0649 \u0627\u0644\u0623\u0633\u0637\u062d \u0627\u0644\u062d\u0627\u0645\u0644\u0629<\/li>\n\n\n\n<li>\u062a\u0633\u0648\u064a\u0629 \u0627\u0644\u0625\u0637\u0627\u0631<\/li>\n\n\n\n<li>\u062a\u0634\u0642\u0642 \u0627\u0644\u0631\u0635\u064a\u0641 \u0627\u0644\u0645\u062d\u064a\u0637<\/li>\n\n\n\n<li>\u0646\u0642\u0627\u0637 \u0627\u0644\u0631\u0641\u0639 \u0627\u0644\u0645\u062d\u0638\u0648\u0631\u0629<\/li>\n\n\n\n<li>\u0627\u0644\u0645\u0641\u0635\u0644\u0627\u062a \u0627\u0644\u062a\u0627\u0644\u0641\u0629<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0646\u0628\u063a\u064a \u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0636\u0648\u0636\u0627\u0621 \u0645\u0639 \u0645\u0631\u0648\u0631 \u0627\u0644\u0648\u0642\u062a. \u0642\u062f \u064a\u0624\u062f\u064a \u0627\u0644\u063a\u0637\u0627\u0621 \u0627\u0644\u0630\u064a \u064a\u0635\u0628\u062d \u0623\u0639\u0644\u0649 \u0635\u0648\u062a\u064b\u0627 \u062a\u062f\u0631\u064a\u062c\u064a\u064b\u0627 \u0625\u0644\u0649 \u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u062e\u0644\u0648\u0635 \u0623\u0648 \u062a\u0622\u0643\u0644 \u0627\u0644\u0645\u062d\u0645\u0644 \u0623\u0648 \u062d\u0631\u0643\u0629 \u0627\u0644\u0623\u0633\u0627\u0633.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u062a\u0646\u0638\u064a\u0641 \u0648\u062d\u062f\u0647 \u0642\u062f \u064a\u0633\u062a\u0639\u064a\u062f \u062d\u062a\u0649 \u0627\u0644\u0645\u0642\u0627\u0639\u062f \u0639\u0646\u062f\u0645\u0627 \u064a\u0643\u0648\u0646 \u0627\u0644\u062d\u0637\u0627\u0645 \u0645\u0633\u0624\u0648\u0644\u0627\u064b. \u062a\u062a\u0637\u0644\u0628 \u0627\u0644\u0634\u0642\u0648\u0642 \u0627\u0644\u0647\u064a\u0643\u0644\u064a\u0629 \u0623\u0648 \u0627\u0644\u062a\u0622\u0643\u0644 \u0627\u0644\u0639\u0645\u064a\u0642 \u0623\u0648 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u063a\u064a\u0631 \u0627\u0644\u0645\u062a\u0637\u0627\u0628\u0642\u0629 \u0623\u0648 \u062a\u0633\u0648\u064a\u0629 \u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0633\u062a\u062c\u0627\u0628\u0629 \u0623\u0643\u062b\u0631 \u0627\u0643\u062a\u0645\u0627\u0644\u0627\u064b.<\/p>\n\n\n\n<h2 id=\"conclusion\" class=\"wp-block-heading\">\u062e\u0627\u062a\u0645\u0629<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0625\u0646 \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0647\u0627\u062f\u0626 \u0627\u0644\u0645\u0635\u0646\u0648\u0639 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0647\u0648 \u0646\u062a\u064a\u062c\u0629 \u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0645\u0646\u062a\u062c \u0627\u0644\u0645\u0646\u0633\u0642\u060c \u0648\u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0623\u0628\u0639\u0627\u062f\u060c \u0648\u062f\u0639\u0645 \u0627\u0644\u0645\u062d\u0645\u0644 \u0627\u0644\u0645\u0633\u062a\u0642\u0631\u060c \u0648\u0627\u0644\u062a\u0648\u0633\u064a\u062f \u0627\u0644\u0645\u0646\u0627\u0633\u0628\u060c \u0648\u0627\u0644\u0642\u0641\u0644 \u0627\u0644\u0622\u0645\u0646\u060c \u0648\u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0635\u062d\u064a\u062d\u060c \u0648\u0627\u0644\u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u0627\u062d\u062a\u0631\u0627\u0641\u064a.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0648\u0623\u0647\u0645 \u0627\u0644\u0645\u0628\u0627\u062f\u0626 \u0647\u064a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0633\u062a\u062e\u062f\u0645 \u0646\u0638\u0627\u0645 \u0627\u0644\u063a\u0637\u0627\u0621 \u0648\u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u0645\u0637\u0627\u0628\u0642.<\/li>\n\n\n\n<li>\u062a\u0648\u0641\u064a\u0631 \u0627\u0644\u062f\u0639\u0645 \u0627\u0644\u0645\u0633\u062a\u0645\u0631 \u0648\u062d\u062a\u0649 \u062a\u062d\u0645\u0644.<\/li>\n\n\n\n<li>\u062d\u062f\u062f \u0641\u0626\u0629 \u062a\u062d\u0645\u064a\u0644 \u0645\u0646\u0627\u0633\u0628\u0629 \u0644\u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631 \u0627\u0644\u0641\u0639\u0644\u064a\u0629.<\/li>\n\n\n\n<li>\u0627\u0633\u062a\u062e\u062f\u0645 \u062d\u0644\u0642\u0627\u062a \u0645\u0637\u0627\u0637\u064a\u0629 \u0647\u0646\u062f\u0633\u064a\u0629 \u0623\u0648 \u0645\u0643\u0648\u0646\u0627\u062a \u062a\u062e\u0645\u064a\u062f \u0639\u0646\u062f \u0627\u0644\u0627\u0642\u062a\u0636\u0627\u0621.<\/li>\n\n\n\n<li>\u0642\u0645 \u0628\u062a\u062b\u0628\u064a\u062a \u0627\u0644\u0625\u0637\u0627\u0631 \u0639\u0644\u0649 \u0623\u0633\u0627\u0633 \u0645\u0633\u062a\u0642\u0631 \u0648\u0645\u062f\u0639\u0648\u0645 \u0628\u0627\u0644\u0643\u0627\u0645\u0644.<\/li>\n\n\n\n<li>\u062d\u0627\u0641\u0638 \u0639\u0644\u0649 \u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u062a\u062c\u0645\u064a\u0639 \u0627\u0644\u0646\u0647\u0627\u0626\u064a \u0645\u0639 \u0627\u0644\u0637\u0631\u064a\u0642.<\/li>\n\n\n\n<li>\u0627\u0641\u062d\u0635 \u0627\u0644\u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u0645\u0628\u0643\u0631\u0629 \u0644\u0644\u062a\u0623\u0631\u062c\u062d \u0648\u0627\u0644\u062a\u0622\u0643\u0644 \u0648\u0627\u0644\u062a\u0633\u0648\u064a\u0629.<\/li>\n\n\n\n<li>\u0627\u0633\u062a\u0628\u062f\u0644 \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0647\u064a\u0643\u0644\u064a\u0629 \u0627\u0644\u062a\u0627\u0644\u0641\u0629 \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0625\u062e\u0641\u0627\u0621 \u0627\u0644\u062d\u0631\u0643\u0629.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u062a\u0648\u0641\u0631 Shengxin Foundry \u0623\u063a\u0637\u064a\u0629 \u063a\u0631\u0641 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644 \u0648\u0627\u0644\u0631\u0627\u062a\u0646\u062c \u0627\u0644\u0645\u0631\u0643\u0628 \u0627\u0644\u0645\u062e\u0635\u0635\u0629 \u0644\u0644\u0637\u0631\u0642 \u0627\u0644\u0628\u0644\u062f\u064a\u0629 \u0648\u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0633\u0643\u0646\u064a\u0629 \u0648\u0627\u0644\u0645\u062c\u0645\u0639\u0627\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0648\u0645\u0631\u0627\u0641\u0642 \u0627\u0644\u0637\u0627\u0642\u0629 \u0648\u0634\u0628\u0643\u0627\u062a \u0627\u0644\u0627\u062a\u0635\u0627\u0644\u0627\u062a \u0648\u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u0635\u0631\u0641 \u0627\u0644\u0635\u062d\u064a. \u064a\u0645\u0643\u0646 \u062a\u062e\u0635\u064a\u0635 \u0627\u0644\u062d\u062c\u0645 \u0648\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0633\u0637\u062d \u0648\u0627\u0644\u0634\u0639\u0627\u0631 \u0648\u0647\u064a\u0643\u0644 \u0627\u0644\u0642\u0641\u0644 \u0648\u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0625\u0637\u0627\u0631 \u0648\u062a\u0641\u0627\u0635\u064a\u0644 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u0636\u0648\u0636\u0627\u0621 \u0648\u0641\u0642\u064b\u0627 \u0644\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0645\u0634\u0631\u0648\u0639.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u064a\u0645\u0643\u0646 \u062a\u0642\u062f\u064a\u0645 \u0631\u0633\u0648\u0645\u0627\u062a \u0627\u0644\u0645\u0634\u0631\u0648\u0639 \u0648\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0641\u0626\u0629 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0648\u0645\u0639\u0644\u0648\u0645\u0627\u062a \u0627\u0644\u0637\u0644\u0628 \u0648\u0627\u0644\u0643\u0645\u064a\u0629 \u0648\u0648\u062c\u0647\u0629 \u0627\u0644\u062a\u0633\u0644\u064a\u0645 \u0645\u0646 \u062e\u0644\u0627\u0644 <a href=\"https:\/\/shengxinfoundry.com\/ar\/contact-us\/\">\u0635\u0641\u062d\u0629 \u0627\u0644\u0627\u062a\u0635\u0627\u0644 Shengxin Foundry<\/a> \u0644\u062f\u0639\u0645 \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0641\u0646\u064a.<\/p>\n\n\n\n<h2 id=\"faq\" class=\"wp-block-heading\">\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/h2>\n\n\n\n<h3 id=\"why-does-a-cast-iron-manhole-cover-make-noise-when-vehicles-pass-over-it\" class=\"wp-block-heading\">\u0644\u0645\u0627\u0630\u0627 \u064a\u064f\u062d\u062f\u062b \u063a\u0637\u0627\u0621 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