{"id":2531,"date":"2026-04-21T02:26:40","date_gmt":"2026-04-21T02:26:40","guid":{"rendered":"https:\/\/shengxinfoundry.com\/?p=2531"},"modified":"2026-04-21T02:26:41","modified_gmt":"2026-04-21T02:26:41","slug":"manhole-cover-cast-iron-standards-for-safe-infrastructure-systems","status":"publish","type":"post","link":"https:\/\/shengxinfoundry.com\/ar\/manhole-cover-cast-iron-standards-for-safe-infrastructure-systems\/","title":{"rendered":"\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0644\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u0622\u0645\u0646\u0629"},"content":{"rendered":"<p>\u0645\u0631\u062d\u0628\u0627 \u0628\u0643\u0645 \u0641\u064a \u0645\u062f\u0648\u0646\u062a\u0646\u0627. \u0646\u062d\u0646 \u0634\u0631\u0643\u0629 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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>\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=\"#key-takeaways\">\u0627\u0644\u0648\u062c\u0628\u0627\u062a \u0627\u0644\u0633\u0631\u064a\u0639\u0629 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/a><\/li><li><a href=\"#introduction-why-manhole-cover-cast-iron-standards-define-urban-safety\">\u0645\u0642\u062f\u0645\u0629<\/a><\/li><li><a href=\"#h-2-global-engineering-framework-of-manhole-cover-cast-iron-standards\">\u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0627\u0644\u0639\u0627\u0644\u0645\u064a \u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0644\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634<\/a><ul><li><a href=\"#h-3-engineering-objectives-of-manhole-cover-cast-iron-standards\">\u0627\u0644\u0623\u0647\u062f\u0627\u0641 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0644\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634<\/a><ul><li><a href=\"#h-4-structural-load-safety-assurance\">\u0636\u0645\u0627\u0646 \u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0647\u064a\u0643\u0644\u064a<\/a><\/li><li><a href=\"#h-4-lifecycle-durability-control\">\u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0645\u062a\u0627\u0646\u0629 \u062f\u0648\u0631\u0629 \u0627\u0644\u062d\u064a\u0627\u0629<\/a><\/li><li><a href=\"#h-4-environmental-resistance-requirements\">\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0628\u064a\u0626\u064a\u0629<\/a><\/li><\/ul><\/li><li><a href=\"#h-3-why-standardization-matters-in-global-infrastructure\">\u0644\u0645\u0627\u0630\u0627 \u064a\u0647\u0645 \u0627\u0644\u062a\u0642\u064a\u064a\u0633 \u0641\u064a \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u0639\u0627\u0644\u0645\u064a\u0629<\/a><\/li><\/ul><\/li><li><a href=\"#h-2-detailed-load-classification-system-en-124-engineering-standard\">\u0646\u0638\u0627\u0645 \u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u062a\u0641\u0635\u064a\u0644\u064a (EN 124 \u0627\u0644\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0647\u0646\u062f\u0633\u064a)<\/a><ul><li><a href=\"#h-3-load-classes-and-real-engineering-applications\">\u062a\u062d\u0645\u064a\u0644 \u0627\u0644\u0641\u0626\u0627\u062a \u0648\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0627\u0644\u062d\u0642\u064a\u0642\u064a\u0629<\/a><\/li><li><a href=\"#h-3-engineering-interpretation-of-load-classes\">\u0627\u0644\u062a\u0641\u0633\u064a\u0631 \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0644\u0641\u0626\u0627\u062a \u0627\u0644\u062a\u062d\u0645\u064a\u0644<\/a><ul><li><a href=\"#h-4-dynamic-load-vs-static-load\">\u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062b\u0627\u0628\u062a<\/a><\/li><\/ul><\/li><li><a href=\"#h-3-real-infrastructure-deployment-mapping\">\u0631\u0633\u0645 \u062e\u0631\u0627\u0626\u0637 \u0646\u0634\u0631 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u062d\u0642\u064a\u0642\u064a\u0629<\/a><\/li><\/ul><\/li><li><a href=\"#h-2-material-science-behind-manhole-cover-cast-iron-systems\">\u0639\u0644\u0648\u0645 \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0631\u0627\u0621 \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0630\u0627\u062a \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634<\/a><ul><li><a href=\"#h-3-gray-cast-iron-vs-ductile-cast-iron-performance\">\u0623\u062f\u0627\u0621 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0631\u0645\u0627\u062f\u064a \u0645\u0642\u0627\u0628\u0644 \u0623\u062f\u0627\u0621 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0645\u0631\u0646<\/a><ul><li><a href=\"#h-4-gray-cast-iron\">\u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0631\u0645\u0627\u062f\u064a<\/a><\/li><li><a href=\"#h-4-ductile-iron-nodular-iron\">\u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644 (\u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0639\u0642\u062f\u064a)<\/a><\/li><\/ul><\/li><li><a href=\"#h-3-iso-1083-material-composition-standards\">\u0645\u0639\u0627\u064a\u064a\u0631 \u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0645\u0648\u0627\u062f ISO 1083<\/a><\/li><li><a href=\"#h-3-metallurgical-advantages-in-cast-iron-engineering\">\u0627\u0644\u0645\u0632\u0627\u064a\u0627 \u0627\u0644\u0645\u0639\u062f\u0646\u064a\u0629 \u0641\u064a \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/a><\/li><\/ul><\/li><li><a href=\"#h-2-performance-testing-protocols-for-manhole-cover-cast-iron\">\u0628\u0631\u0648\u062a\u0648\u0643\u0648\u0644\u0627\u062a \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0623\u062f\u0627\u0621 \u0644\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/a><ul><li><a href=\"#h-3-static-load-testing\">\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062b\u0627\u0628\u062a<\/a><\/li><li><a href=\"#h-3-dynamic-fatigue-testing\">\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062a\u0639\u0628 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\u0627\u0644\u0628\u064a\u0626\u064a<\/a><\/li><\/ul><\/li><li><a href=\"#h-2-installation-engineering-guidelines\">\u0625\u0631\u0634\u0627\u062f\u0627\u062a \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a<\/a><ul><li><a href=\"#h-3-structural-foundation-requirements\">\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0623\u0633\u0627\u0633 \u0627\u0644\u0647\u064a\u0643\u0644\u064a<\/a><\/li><li><a href=\"#h-3-road-surface-integration-standards\">\u0645\u0639\u0627\u064a\u064a\u0631 \u062a\u0643\u0627\u0645\u0644 \u0633\u0637\u062d \u0627\u0644\u0637\u0631\u064a\u0642<\/a><\/li><\/ul><\/li><li><a href=\"#h-2-global-infrastructure-case-studies\">\u062f\u0631\u0627\u0633\u0627\u062a \u062d\u0627\u0644\u0629 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u0639\u0627\u0644\u0645\u064a\u0629<\/a><ul><li><a href=\"#h-3-smart-city-upgrade-project-europe\">\u0645\u0634\u0631\u0648\u0639 \u062a\u0631\u0642\u064a\u0629 \u0627\u0644\u0645\u062f\u064a\u0646\u0629 \u0627\u0644\u0630\u0643\u064a\u0629 (\u0623\u0648\u0631\u0648\u0628\u0627)<\/a><\/li><li><a href=\"#h-3-coastal-industrial-port-project-asia\">\u0645\u0634\u0631\u0648\u0639 \u0627\u0644\u0645\u064a\u0646\u0627\u0621 \u0627\u0644\u0635\u0646\u0627\u0639\u064a \u0627\u0644\u0633\u0627\u062d\u0644\u064a (\u0622\u0633\u064a\u0627)<\/a><\/li><li><a href=\"#h-3-urban-flood-prevention-project\">\u0645\u0634\u0631\u0648\u0639 \u0627\u0644\u0648\u0642\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u0641\u064a\u0636\u0627\u0646\u0627\u062a \u0627\u0644\u062d\u0636\u0631\u064a\u0629<\/a><\/li><\/ul><\/li><li><a href=\"#h-2-market-trends-in-manhole-cover-cast-iron-industry\">\u0627\u062a\u062c\u0627\u0647\u0627\u062a \u0627\u0644\u0633\u0648\u0642 \u0641\u064a \u0635\u0646\u0627\u0639\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0630\u0627\u062a \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634<\/a><ul><li><a href=\"#h-3-smart-infrastructure-integration\">\u062a\u0643\u0627\u0645\u0644 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u0630\u0643\u064a\u0629<\/a><\/li><li><a href=\"#h-3-global-market-growth\">\u0646\u0645\u0648 \u0627\u0644\u0633\u0648\u0642 \u0627\u0644\u0639\u0627\u0644\u0645\u064a\u0629<\/a><\/li><li><a href=\"#h-3-sustainability-and-recycling-trends\">\u0627\u062a\u062c\u0627\u0647\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u062f\u0627\u0645\u0629 \u0648\u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u062a\u062f\u0648\u064a\u0631<\/a><\/li><\/ul><\/li><li><a href=\"#h-2-economic-impact-of-manhole-cover-cast-iron-selection\">\u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0627\u0642\u062a\u0635\u0627\u062f\u064a \u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0644\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634<\/a><ul><li><a href=\"#h-3-cost-vs-lifecycle-efficiency\">\u0627\u0644\u062a\u0643\u0644\u0641\u0629 \u0645\u0642\u0627\u0628\u0644 \u0643\u0641\u0627\u0621\u0629 \u062f\u0648\u0631\u0629 \u0627\u0644\u062d\u064a\u0627\u0629<\/a><\/li><li><a href=\"#h-3-infrastructure-roi-analysis\">\u062a\u062d\u0644\u064a\u0644 \u0639\u0627\u0626\u062f \u0627\u0644\u0627\u0633\u062a\u062b\u0645\u0627\u0631 \u0644\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629<\/a><\/li><\/ul><\/li><li><a href=\"#h-2-frequently-asked-questions-faq\">\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/a><ul><li><a href=\"#h-3-what-is-manhole-cover-cast-iron-used-for\">\u0645\u0627 \u0647\u064a \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0627\u062a \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f 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\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\u0632\u0647\u0631 \u0642\u0627\u0628\u0644\u0629 \u0644\u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u062a\u062f\u0648\u064a\u0631\u061f<\/a><\/li><\/ul><\/li><li><a href=\"#conclusion-engineering-the-future-of-safe-urban-infrastructure\">\u062e\u0627\u062a\u0645\u0629<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"key-takeaways\">\u0627\u0644\u0648\u062c\u0628\u0627\u062a \u0627\u0644\u0633\u0631\u064a\u0639\u0629 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062a\u0639\u062f \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\u0632\u0647\u0631 \u0645\u0646 \u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u062d\u064a\u0648\u064a\u0629 \u0627\u0644\u062d\u0627\u0645\u0644\u0629 \u0641\u064a \u0627\u0644\u0645\u062f\u0646 \u0627\u0644\u062d\u062f\u064a\u062b\u0629<\/li>\n\n\n\n<li>\u062a\u062d\u062f\u062f \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062f\u0648\u0644\u064a\u0629 \u0645\u062b\u0644 EN 124 \u0648ASTM A48 \u0648ISO 1083 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0648\u0627\u0644\u0623\u062f\u0627\u0621<\/li>\n\n\n\n<li>\u064a\u062a\u0641\u0648\u0642 \u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644 \u0628\u0634\u0643\u0644 \u0643\u0628\u064a\u0631 \u0639\u0644\u0649 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0631\u0645\u0627\u062f\u064a \u0641\u064a \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0635\u062f\u0645\u0627\u062a \u0648\u0639\u0645\u0631 \u0627\u0644\u0643\u0644\u0627\u0644<\/li>\n\n\n\n<li>\u0633\u0644\u064a\u0645 <strong><a href=\"https:\/\/shengxinfoundry.com\/ar\/product-category\/spheroidal-graphite-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<\/a><\/strong> \u064a\u0642\u0644\u0644 \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0646 \u062d\u0648\u0627\u062f\u062b \u0641\u0634\u0644 \u0627\u0644\u0637\u0631\u064a\u0642 \u0628\u0645\u0627 \u064a\u0635\u0644 \u0625\u0644\u0649 40%<\/li>\n\n\n\n<li>\u062a\u0636\u0645\u0646 \u0641\u0626\u0627\u062a \u0627\u0644\u062a\u062d\u0645\u064a\u0644 (A15 beF900) \u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0627\u0644\u0635\u062d\u064a\u062d \u0639\u0628\u0631 \u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0645\u0634\u0627\u0629 \u0648\u0627\u0644\u062d\u0636\u0631\u064a\u0629 \u0648\u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629<\/li>\n\n\n\n<li>\u062a\u0639\u0645\u0644 \u0627\u0644\u0637\u0644\u0627\u0621\u0627\u062a \u0627\u0644\u0645\u062a\u0642\u062f\u0645\u0629 \u0648\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0645\u0631\u0627\u0642\u0628\u0629 \u0627\u0644\u0630\u0643\u064a\u0629 \u0639\u0644\u0649 \u0625\u062d\u062f\u0627\u062b \u062a\u062d\u0648\u0644 \u0641\u064a \u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u062d\u062f\u064a\u062b\u0629<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"introduction-why-manhole-cover-cast-iron-standards-define-urban-safety\">\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=\"768\" height=\"538\" src=\"https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/04\/xacsacavavadav-768x538.jpg.webp\" alt=\"\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631\" class=\"wp-image-2532\" style=\"object-fit:cover;width:500px;height:400px\" srcset=\"https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/04\/xacsacavavadav-768x538.jpg.webp 768w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/04\/xacsacavavadav-768x538.jpg-300x210.webp 300w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/04\/xacsacavavadav-768x538.jpg-18x12.webp 18w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/04\/xacsacavavadav-768x538.jpg-600x420.webp 600w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/figure>\n\n\n\n<p>\u0641\u064a \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u062d\u062f\u064a\u062b\u0629\u060c, <strong><a href=\"https:\/\/shengxinfoundry.com\/ar\/product-category\/spheroidal-graphite-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<\/a><\/strong> \u0625\u0646\u0647 \u0623\u0643\u062b\u0631 \u0628\u0643\u062b\u064a\u0631 \u0645\u0646 \u0645\u062c\u0631\u062f \u063a\u0637\u0627\u0621 \u0637\u0631\u064a\u0642 \u0628\u0633\u064a\u0637\u060c \u0641\u0647\u0648 \u0639\u0646\u0635\u0631 \u0623\u0645\u0627\u0646 \u0647\u064a\u0643\u0644\u064a \u0645\u0647\u0645 \u064a\u062d\u0645\u064a \u0634\u0628\u0643\u0627\u062a \u0627\u0644\u0645\u0631\u0627\u0641\u0642 \u062a\u062d\u062a \u0627\u0644\u0623\u0631\u0636 \u0627\u0644\u062a\u064a \u062a\u0628\u0644\u063a \u0642\u064a\u0645\u062a\u0647\u0627 \u0645\u0644\u0627\u064a\u064a\u0646 \u0627\u0644\u062f\u0648\u0644\u0627\u0631\u0627\u062a. \u0648\u062a\u0634\u0645\u0644 \u0647\u0630\u0647 \u0623\u0646\u0638\u0645\u0629 \u0625\u0645\u062f\u0627\u062f\u0627\u062a \u0627\u0644\u0645\u064a\u0627\u0647\u060c \u0648\u0634\u0628\u0643\u0627\u062a \u0627\u0644\u0635\u0631\u0641 \u0627\u0644\u0635\u062d\u064a\u060c \u0648\u062e\u0637\u0648\u0637 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u063a\u0627\u0632\u060c \u0648\u0642\u0646\u0648\u0627\u062a \u0627\u0644\u0623\u0644\u064a\u0627\u0641 \u0627\u0644\u0636\u0648\u0626\u064a\u0629 \u0644\u0644\u0627\u062a\u0635\u0627\u0644\u0627\u062a\u060c \u0648\u0627\u0644\u0642\u0646\u0648\u0627\u062a \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629.<\/p>\n\n\n\n<p>\u062a\u0634\u064a\u0631 \u062a\u0642\u0627\u0631\u064a\u0631 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u0639\u0627\u0644\u0645\u064a\u0629 \u0625\u0644\u0649 \u0623\u0646 \u0627\u0644\u062d\u0643\u0648\u0645\u0627\u062a \u0627\u0644\u0628\u0644\u062f\u064a\u0629 \u062a\u0646\u0641\u0642 \u0623\u0643\u062b\u0631 \u0645\u0646 \u0630\u0644\u0643 <strong>$12 58 \u0645\u0644\u064a\u0627\u0631 \u0633\u0646\u0648\u064a\u064b\u0627<\/strong> \u0641\u064a \u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u0637\u0631\u0642 \u0648\u0627\u0644\u0645\u0631\u0627\u0641\u0642 \u062a\u062d\u062a \u0627\u0644\u0623\u0631\u0636\u060c \u0648\u064a\u0631\u062a\u0628\u0637 \u062c\u0632\u0621 \u0643\u0628\u064a\u0631 \u0645\u0646 \u0647\u0630\u0647 \u0627\u0644\u062a\u0643\u0627\u0644\u064a\u0641 \u0627\u0631\u062a\u0628\u0627\u0637\u064b\u0627 \u0645\u0628\u0627\u0634\u0631\u064b\u0627 \u0628\u0641\u0634\u0644 \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634\u060c \u0623\u0648 \u0639\u062f\u0645 \u0627\u0644\u0645\u062d\u0627\u0630\u0627\u0629\u060c \u0623\u0648 \u062a\u0644\u0641 \u0627\u0644\u062a\u0622\u0643\u0644\u060c \u0623\u0648 \u0627\u0646\u0647\u064a\u0627\u0631 \u0627\u0644\u062d\u0645\u0644.<\/p>\n\n\n\n<p>\u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0624\u062f\u064a \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0627\u0644\u0641\u0627\u0634\u0644 \u0625\u0644\u0649 \u0645\u0627 \u064a\u0644\u064a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062d\u0648\u0627\u062f\u062b \u0627\u0644\u0645\u0631\u0643\u0628\u0627\u062a \u0648\u0645\u0637\u0627\u0644\u0628\u0627\u062a \u0627\u0644\u0645\u0633\u0624\u0648\u0644\u064a\u0629<\/li>\n\n\n\n<li>\u0627\u0644\u062a\u0639\u0631\u0636 \u0644\u062e\u0637\u0648\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u062a\u062d\u062a \u0627\u0644\u0623\u0631\u0636<\/li>\n\n\n\n<li>\u0627\u0644\u0641\u064a\u0636\u0627\u0646\u0627\u062a \u0628\u0633\u0628\u0628 \u0641\u0634\u0644 \u0627\u0644\u0635\u0631\u0641<\/li>\n\n\n\n<li>\u0627\u0646\u0642\u0637\u0627\u0639 \u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631 \u0648\u062a\u0643\u0627\u0644\u064a\u0641 \u0627\u0644\u0625\u0635\u0644\u0627\u062d \u0641\u064a \u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0637\u0648\u0627\u0631\u0626<\/li>\n<\/ul>\n\n\n\n<p>\u0628\u0633\u0628\u0628 \u0647\u0630\u0627\u060c, <strong>\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/strong> \u064a\u062a\u0645 \u062a\u0646\u0638\u064a\u0645\u0647\u0627 \u0628\u0634\u0643\u0644 \u0635\u0627\u0631\u0645 \u0628\u0645\u0648\u062c\u0628 \u0627\u0644\u0623\u0637\u0631 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0627\u0644\u062f\u0648\u0644\u064a\u0629 \u0644\u0636\u0645\u0627\u0646 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0639\u0627\u0645\u0629 \u0648\u0627\u0644\u0645\u062a\u0627\u0646\u0629 \u0648\u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0647\u064a\u0643\u0644\u064a\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u062f\u0649 \u0627\u0644\u0637\u0648\u064a\u0644.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-global-engineering-framework-of-manhole-cover-cast-iron-standards\">\u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0627\u0644\u0639\u0627\u0644\u0645\u064a \u0644 <a href=\"https:\/\/shengxinfoundry.com\/ar\/product-category\/spheroidal-graphite-cast-iron-manhole-cover\/\">\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/a> \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631<\/h2>\n\n\n\n<p>\u062a\u0645 \u062a\u0635\u0645\u064a\u0645 \u0645\u0639\u0627\u064a\u064a\u0631 \u063a\u0637\u0627\u0621 \u063a\u0631\u0641 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0644\u062a\u0648\u062d\u064a\u062f \u0623\u062f\u0627\u0621 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0639\u0628\u0631 \u0645\u062e\u062a\u0644\u0641 \u0627\u0644\u0628\u0644\u062f\u0627\u0646 \u0648\u0627\u0644\u0645\u0646\u0627\u062e\u0627\u062a. \u062a\u0634\u0645\u0644 \u0627\u0644\u0623\u0637\u0631 \u0627\u0644\u0639\u0627\u0644\u0645\u064a\u0629 \u0627\u0644\u0623\u0643\u062b\u0631 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u064b\u0627 \u0645\u0627 \u064a\u0644\u064a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0625\u0646 124 (\u0623\u0648\u0631\u0648\u0628\u0627)<\/li>\n\n\n\n<li>ASTM A48 \/ A536 (\u0627\u0644\u0648\u0644\u0627\u064a\u0627\u062a \u0627\u0644\u0645\u062a\u062d\u062f\u0629 \u0627\u0644\u0623\u0645\u0631\u064a\u0643\u064a\u0629)<\/li>\n\n\n\n<li>ISO 1083 (\u0627\u0644\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u062f\u0648\u0644\u064a \u0644\u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644)<\/li>\n\n\n\n<li>BS 497 \/ BS EN 124 (\u062a\u0639\u062f\u064a\u0644 \u0627\u0644\u0645\u0645\u0644\u0643\u0629 \u0627\u0644\u0645\u062a\u062d\u062f\u0629)<\/li>\n<\/ul>\n\n\n\n<p>\u0644\u0627 \u062a\u062d\u062f\u062f \u0647\u0630\u0647 \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0642\u0648\u0629 \u0641\u062d\u0633\u0628\u060c \u0628\u0644 \u062a\u062d\u062f\u062f \u0623\u064a\u0636\u064b\u0627 \u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0639\u0628 \u0648\u062f\u0648\u0631\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0648\u062a\u0641\u0627\u0648\u062a\u0627\u062a \u0627\u0644\u062a\u062b\u0628\u064a\u062a.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-engineering-objectives-of-manhole-cover-cast-iron-standards\">\u0627\u0644\u0623\u0647\u062f\u0627\u0641 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0644\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-4-structural-load-safety-assurance\">\u0636\u0645\u0627\u0646 \u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0647\u064a\u0643\u0644\u064a<\/h4>\n\n\n\n<p>\u064a\u062c\u0628 \u0623\u0646 \u062a\u062a\u062d\u0645\u0644 \u0623\u063a\u0637\u064a\u0629 \u063a\u0631\u0641 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0645\u0631\u0643\u0628\u0627\u062a \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0648\u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a\u0629 \u0627\u0644\u062a\u064a \u062a\u062a\u0631\u0627\u0648\u062d \u0645\u0646 \u0627\u0644\u062f\u0631\u0627\u062c\u0627\u062a \u0625\u0644\u0649 \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0646\u0642\u0644 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0627\u0644\u062a\u064a \u064a\u0628\u0644\u063a \u0648\u0632\u0646\u0647\u0627 90 \u0637\u0646\u064b\u0627.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-4-lifecycle-durability-control\">\u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0645\u062a\u0627\u0646\u0629 \u062f\u0648\u0631\u0629 \u0627\u0644\u062d\u064a\u0627\u0629<\/h4>\n\n\n\n<p>\u062a\u0636\u0645\u0646 \u0627\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 \u0645\u0646 \u0623\u0647\u062f\u0627\u0641 \u0639\u0645\u0631 \u0627\u0644\u062e\u062f\u0645\u0629 \u0628\u064a\u0646 <strong>\u0645\u0646 20 \u0625\u0644\u0649 40 \u0633\u0646\u0629 \u062d\u0633\u0628 \u0627\u0644\u0637\u0628\u0642\u0629 \u0648\u0627\u0644\u0628\u064a\u0626\u0629<\/strong>.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-4-environmental-resistance-requirements\">\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0628\u064a\u0626\u064a\u0629<\/h4>\n\n\n\n<p>\u064a\u062c\u0628 \u0623\u0646 \u062a\u0642\u0627\u0648\u0645 \u0627\u0644\u0623\u063a\u0637\u064a\u0629 \u0627\u0644\u062a\u0622\u0643\u0644 \u0627\u0644\u0646\u0627\u062a\u062c \u0639\u0646:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u062a\u0639\u0631\u0636 \u0644\u0644\u0643\u0644\u0648\u0631\u064a\u062f (\u0627\u0644\u0645\u062f\u0646 \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629)<\/li>\n\n\n\n<li>\u0645\u064a\u0627\u0647 \u0627\u0644\u0623\u0645\u0637\u0627\u0631 \u0627\u0644\u062d\u0645\u0636\u064a\u0629<\/li>\n\n\n\n<li>\u062f\u0648\u0631\u0627\u062a \u0627\u0644\u062a\u062c\u0645\u064a\u062f \u0648\u0627\u0644\u0630\u0648\u0628\u0627\u0646 \u0641\u064a \u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0628\u0627\u0631\u062f\u0629<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-why-standardization-matters-in-global-infrastructure\">\u0644\u0645\u0627\u0630\u0627 \u064a\u0647\u0645 \u0627\u0644\u062a\u0642\u064a\u064a\u0633 \u0641\u064a \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u0639\u0627\u0644\u0645\u064a\u0629<\/h3>\n\n\n\n<p>\u0628\u062f\u0648\u0646 \u0645\u0648\u062d\u062f\u0629 <strong><a href=\"https:\/\/shengxinfoundry.com\/ar\/product-category\/spheroidal-graphite-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<\/a><\/strong> \u0627\u0644\u0623\u0646\u0638\u0645\u0629:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062a\u0632\u062f\u0627\u062f \u0645\u062e\u0627\u0637\u0631 \u0627\u0646\u0647\u064a\u0627\u0631 \u0627\u0644\u0637\u0631\u0642 \u0628\u0634\u0643\u0644 \u0643\u0628\u064a\u0631<\/li>\n\n\n\n<li>\u062a\u0643\u0627\u0644\u064a\u0641 \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u062a\u0635\u0628\u062d \u063a\u064a\u0631 \u0645\u062a\u0648\u0642\u0639\u0629<\/li>\n\n\n\n<li>\u062a\u0641\u0642\u062f \u0645\u0634\u0627\u0631\u064a\u0639 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0639\u0628\u0631 \u0627\u0644\u062d\u062f\u0648\u062f \u0627\u0644\u062a\u0648\u0627\u0641\u0642<\/li>\n<\/ul>\n\n\n\n<p>\u0648\u0641\u0642\u064b\u0627 \u0644\u062a\u0642\u0627\u0631\u064a\u0631 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0644\u0644\u0628\u0646\u0643 \u0627\u0644\u062f\u0648\u0644\u064a\u060c \u062a\u0639\u0645\u0644 \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0645\u0648\u062d\u062f\u0629 \u0639\u0644\u0649 \u062a\u0642\u0644\u064a\u0644 \u062a\u0643\u0627\u0644\u064a\u0641 \u0635\u064a\u0627\u0646\u0629 \u062f\u0648\u0631\u0629 \u0627\u0644\u062d\u064a\u0627\u0629 \u0628\u0646\u0633\u0628\u0629 \u062a\u0635\u0644 \u0625\u0644\u0649 <strong>28.35%<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-detailed-load-classification-system-en-124-engineering-standard\">\u0646\u0638\u0627\u0645 \u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u062a\u0641\u0635\u064a\u0644\u064a (EN 124 \u0627\u0644\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0647\u0646\u062f\u0633\u064a)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-load-classes-and-real-engineering-applications\">\u062a\u062d\u0645\u064a\u0644 \u0627\u0644\u0641\u0626\u0627\u062a \u0648\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0627\u0644\u062d\u0642\u064a\u0642\u064a\u0629<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0641\u0635\u0644<\/th><th>\u062a\u0642\u064a\u064a\u0645 \u0627\u0644\u062d\u0645\u0644<\/th><th>\u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a (\u0643\u064a\u0644\u0648 \u0646\u064a\u0648\u062a\u0646)<\/th><th>\u0633\u064a\u0646\u0627\u0631\u064a\u0648 \u0627\u0644\u062a\u0637\u0628\u064a\u0642<\/th><\/tr><\/thead><tbody><tr><td>\u062315<\/td><td>15 \u0643\u064a\u0644\u0648 \u0646\u064a\u0648\u062a\u0646<\/td><td>1.5 \u0637\u0646<\/td><td>\u0645\u0645\u0631\u0627\u062a \u0627\u0644\u0645\u0634\u0627\u0629 \u0648\u0627\u0644\u062d\u062f\u0627\u0626\u0642<\/td><\/tr><tr><td>\u0628125<\/td><td>125 \u0643\u064a\u0644\u0648 \u0646\u064a\u0648\u062a\u0646<\/td><td>12.5 \u0637\u0646<\/td><td>\u0627\u0644\u0623\u0631\u0635\u0641\u0629 \u0648\u0645\u0648\u0627\u0642\u0641 \u0627\u0644\u0633\u064a\u0627\u0631\u0627\u062a<\/td><\/tr><tr><td>\u062c250<\/td><td>250 \u0643\u064a\u0644\u0648 \u0646\u064a\u0648\u062a\u0646<\/td><td>25 \u0637\u0646<\/td><td>\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0635\u0631\u0641 \u0627\u0644\u0635\u062d\u064a \u0639\u0644\u0649 \u062c\u0627\u0646\u0628 \u0627\u0644\u0637\u0631\u064a\u0642<\/td><\/tr><tr><td>D400<\/td><td>400 \u0643\u064a\u0644\u0648 \u0646\u064a\u0648\u062a\u0646<\/td><td>40 \u0637\u0646<\/td><td>\u0627\u0644\u0637\u0631\u0642 \u0627\u0644\u062d\u0636\u0631\u064a\u0629 \u0648\u0627\u0644\u0637\u0631\u0642 \u0627\u0644\u0633\u0631\u064a\u0639\u0629<\/td><\/tr><tr><td>E600<\/td><td>600 \u0643\u064a\u0644\u0648 \u0646\u064a\u0648\u062a\u0646<\/td><td>60 \u0637\u0646<\/td><td>\u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0644\u0648\u062c\u0633\u062a\u064a\u0629 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629<\/td><\/tr><tr><td>F900<\/td><td>900 \u0643\u064a\u0644\u0648 \u0646\u064a\u0648\u062a\u0646<\/td><td>90 \u0637\u0646<\/td><td>\u0627\u0644\u0645\u0637\u0627\u0631\u0627\u062a \u0648\u0627\u0644\u0645\u0648\u0627\u0646\u0626 \u0648\u0627\u0644\u0635\u0646\u0627\u0639\u0627\u062a \u0627\u0644\u062b\u0642\u064a\u0644\u0629<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-engineering-interpretation-of-load-classes\">\u0627\u0644\u062a\u0641\u0633\u064a\u0631 \u0627\u0644\u0647\u0646\u062f\u0633\u064a \u0644\u0641\u0626\u0627\u062a \u0627\u0644\u062a\u062d\u0645\u064a\u0644<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-4-dynamic-load-vs-static-load\">\u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062b\u0627\u0628\u062a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062b\u0627\u0628\u062a: \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u062b\u0627\u0628\u062a (\u0627\u0644\u0645\u0631\u0643\u0628\u0629 \u0645\u062a\u0648\u0642\u0641\u0629)<\/li>\n\n\n\n<li>\u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a: \u0642\u0648\u0629 \u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0645\u062a\u062d\u0631\u0643\u0629 (\u062d\u0631\u0643\u0629 \u0627\u0644\u0645\u0631\u0648\u0631)<\/li>\n<\/ul>\n\n\n\n<p>\u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a \u0639\u0627\u062f\u0629 <strong>1.3 intech2.0 \u0623\u0639\u0644\u0649 \u0645\u0646 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062b\u0627\u0628\u062a<\/strong>, \u060c \u062d\u0633\u0628 \u0633\u0631\u0639\u0629 \u0627\u0644\u0633\u064a\u0627\u0631\u0629 \u0648\u062d\u0627\u0644\u0629 \u0627\u0644\u0637\u0631\u064a\u0642.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-real-infrastructure-deployment-mapping\">\u0631\u0633\u0645 \u062e\u0631\u0627\u0626\u0637 \u0646\u0634\u0631 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u062d\u0642\u064a\u0642\u064a\u0629<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0633\u0643\u0646\u064a\u0629 \u2192 A15 interb125<\/li>\n\n\n\n<li>\u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u062a\u062c\u0627\u0631\u064a\u0629 \u2192 B125 conc250<\/li>\n\n\n\n<li>\u0627\u0644\u0637\u0631\u0642 \u0627\u0644\u0633\u0631\u064a\u0639\u0629 \u0627\u0644\u062d\u0636\u0631\u064a\u0629 \u2192 D400<\/li>\n\n\n\n<li>\u0627\u0644\u0645\u0646\u0627\u0641\u0630 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u2192 E600 goF900<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-material-science-behind-manhole-cover-cast-iron-systems\">\u0639\u0644\u0648\u0645 \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0631\u0627\u0621 \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0630\u0627\u062a \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-gray-cast-iron-vs-ductile-cast-iron-performance\">\u0623\u062f\u0627\u0621 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0631\u0645\u0627\u062f\u064a \u0645\u0642\u0627\u0628\u0644 \u0623\u062f\u0627\u0621 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0645\u0631\u0646<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-4-gray-cast-iron\">\u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0631\u0645\u0627\u062f\u064a<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0642\u0648\u0629 \u0627\u0644\u0636\u063a\u0637: \u0639\u0627\u0644\u064a\u0629<\/li>\n\n\n\n<li>\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0623\u062b\u064a\u0631: \u0645\u0646\u062e\u0641\u0636\u0629<\/li>\n\n\n\n<li>\u062e\u0637\u0631 \u0627\u0646\u062a\u0634\u0627\u0631 \u0627\u0644\u0643\u0631\u0627\u0643: \u0645\u0631\u062a\u0641\u0639<\/li>\n\n\n\n<li>\u062a\u0643\u0644\u0641\u0629 \u0645\u0646\u062e\u0641\u0636\u0629<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-4-ductile-iron-nodular-iron\">\u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644 (\u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0639\u0642\u062f\u064a)<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0642\u0648\u0629 \u0627\u0644\u0634\u062f: \u062a\u0635\u0644 \u0625\u0644\u0649 <strong>420700 \u0645\u064a\u062c\u0627 \u0628\u0627\u0633\u0643\u0627\u0644<\/strong><\/li>\n\n\n\n<li>\u0627\u0644\u0627\u0633\u062a\u0637\u0627\u0644\u0629: 10%\u060c 18%<\/li>\n\n\n\n<li>\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0639\u0628: \u0639\u0627\u0644\u064a\u0629<\/li>\n\n\n\n<li>\u062a\u0641\u0636\u064a\u0644 \u0627\u0644\u0635\u0646\u0627\u0639\u0629: &gt;85% \u0644\u0644\u0645\u0646\u0634\u0622\u062a \u0627\u0644\u062d\u062f\u064a\u062b\u0629<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-iso-1083-material-composition-standards\">\u0645\u0639\u0627\u064a\u064a\u0631 \u062a\u0643\u0648\u064a\u0646 \u0627\u0644\u0645\u0648\u0627\u062f ISO 1083<\/h3>\n\n\n\n<p>\u062a\u0631\u0643\u064a\u0628\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0631\u0646 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u0643\u0631\u0628\u0648\u0646: 3.2% \u0639\u0644\u0649 3.9%<\/li>\n\n\n\n<li>\u0627\u0644\u0633\u064a\u0644\u064a\u0643\u0648\u0646: 2.0% \u0639\u0644\u0649 \u0627\u0644\u062a\u0648\u0627\u0644\u064a3.0%<\/li>\n\n\n\n<li>\u0627\u0644\u0645\u063a\u0646\u064a\u0633\u064a\u0648\u0645: 0.03% \u06480.06%<\/li>\n\n\n\n<li>\u0627\u0644\u0641\u0648\u0633\u0641\u0648\u0631: &lt;0.1% (\u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0634\u0648\u0627\u0626\u0628 \u0627\u0644\u0645\u062a\u062d\u0643\u0645 \u0641\u064a\u0647)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-metallurgical-advantages-in-cast-iron-engineering\">\u0627\u0644\u0645\u0632\u0627\u064a\u0627 \u0627\u0644\u0645\u0639\u062f\u0646\u064a\u0629 \u0641\u064a \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062a\u0639\u0645\u0644 \u0639\u0642\u064a\u062f\u0627\u062a \u0627\u0644\u062c\u0631\u0627\u0641\u064a\u062a \u0639\u0644\u0649 \u062a\u062d\u0633\u064a\u0646 \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0625\u062c\u0647\u0627\u062f<\/li>\n\n\n\n<li>\u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0646\u062a\u0634\u0627\u0631 \u0627\u0644\u0643\u0631\u0627\u0643<\/li>\n\n\n\n<li>\u062a\u0639\u0632\u064a\u0632 \u0627\u0645\u062a\u0635\u0627\u0635 \u0627\u0644\u0627\u0647\u062a\u0632\u0627\u0632<\/li>\n\n\n\n<li>\u0639\u0645\u0631 \u062a\u0639\u0628 \u0623\u0637\u0648\u0644 \u062a\u062d\u062a \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062f\u0648\u0631\u064a<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-performance-testing-protocols-for-manhole-cover-cast-iron\">\u0628\u0631\u0648\u062a\u0648\u0643\u0648\u0644\u0627\u062a \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0623\u062f\u0627\u0621 \u0644 <a href=\"https:\/\/shengxinfoundry.com\/ar\/product-category\/spheroidal-graphite-cast-iron-manhole-cover\/\">\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/a><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-static-load-testing\">\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u062b\u0627\u0628\u062a<\/h3>\n\n\n\n<p>\u064a\u062a\u0645 \u0625\u062c\u0631\u0627\u0624\u0647\u0627 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0645\u0643\u0627\u0628\u0633 \u0647\u064a\u062f\u0631\u0648\u0644\u064a\u0643\u064a\u0629 \u062a\u062d\u0627\u0643\u064a \u0638\u0631\u0648\u0641 \u0627\u0644\u0648\u0632\u0646 \u0641\u064a \u0627\u0644\u0639\u0627\u0644\u0645 \u0627\u0644\u062d\u0642\u064a\u0642\u064a.<\/p>\n\n\n\n<p>\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0642\u0628\u0648\u0644:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0644\u0627 \u064a\u0648\u062c\u062f \u062a\u0634\u0648\u0647 \u0645\u0631\u0626\u064a \u0639\u0646\u062f \u0627\u0644\u062d\u0645\u0644 \u0627\u0644\u0645\u0642\u062f\u0631<\/li>\n\n\n\n<li>\u062a\u0634\u0648\u0647 \u062f\u0627\u0626\u0645 &lt;0.1% \u0645\u0646 \u0627\u0644\u0642\u0637\u0631<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-dynamic-fatigue-testing\">\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062a\u0639\u0628 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a<\/h3>\n\n\n\n<p>\u064a\u062d\u0627\u0643\u064a \u062f\u0648\u0631\u0627\u062a \u062d\u0631\u0643\u0629 \u0645\u0631\u0648\u0631 \u0627\u0644\u0645\u0631\u0643\u0628\u0627\u062a \u0627\u0644\u0645\u062a\u0643\u0631\u0631\u0629:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062f\u0648\u0631\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629: <strong>100.000 \u0625\u0644\u0649 2.000.000 \u062f\u0648\u0631\u0629<\/strong><\/li>\n\n\n\n<li>\u0648\u0632\u0646 \u0627\u0644\u0633\u064a\u0627\u0631\u0629 \u0627\u0644\u0645\u062d\u0627\u0643\u0649: \u064a\u0635\u0644 \u0625\u0644\u0649 40 \u0637\u0646\u064b\u0627<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-impact-resistance-testing\">\u0627\u062e\u062a\u0628\u0627\u0631 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0623\u062b\u064a\u0631<\/h3>\n\n\n\n<p>\u0627\u062e\u062a\u0628\u0627\u0631 \u0625\u0633\u0642\u0627\u0637 \u0627\u0644\u0645\u0637\u0631\u0642\u0629:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u0648\u0632\u0646: 50.150 \u0643\u062c\u0645<\/li>\n\n\n\n<li>\u0627\u0631\u062a\u0641\u0627\u0639 \u0627\u0644\u0642\u0637\u0631\u0629: 1.53 \u0645\u062a\u0631<\/li>\n\n\n\n<li>\u0627\u0644\u0647\u062f\u0641: \u0639\u062f\u0645 \u0648\u062c\u0648\u062f \u062a\u0634\u0642\u0642 \u0623\u0648 \u0643\u0633\u0631<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-long-term-aging-simulation\">\u0645\u062d\u0627\u0643\u0627\u0629 \u0627\u0644\u0634\u064a\u062e\u0648\u062e\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u062f\u0649 \u0627\u0644\u0637\u0648\u064a\u0644<\/h3>\n\n\n\n<p>\u0645\u062d\u0627\u0643\u0627\u0629 \u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u062a\u0622\u0643\u0644 \u0627\u0644\u0645\u062a\u0633\u0627\u0631\u0639\u0629:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u062a\u0639\u0631\u0636 \u0627\u0644\u0628\u064a\u0626\u064a \u0644\u0645\u062f\u0629 10-30 \u0633\u0646\u0629<\/li>\n\n\n\n<li>\u0627\u062e\u062a\u0628\u0627\u0631 \u0631\u0634 \u0627\u0644\u0645\u0644\u062d (\u0645\u0639\u064a\u0627\u0631 ASTM B117)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-anti-theft-engineering-in-manhole-cover-cast-iron-systems\">\u0647\u0646\u062f\u0633\u0629 \u0645\u0643\u0627\u0641\u062d\u0629 \u0627\u0644\u0633\u0631\u0642\u0629 \u0641\u064a <a href=\"https:\/\/shengxinfoundry.com\/ar\/product-category\/spheroidal-graphite-cast-iron-manhole-cover\/\">\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/a> \u0623\u0646\u0638\u0645\u0629<\/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\/ascacsavdsvsbsd.jpg\" alt=\"\" class=\"wp-image-1176\" style=\"object-fit:cover;width:500px;height:400px\" srcset=\"https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacsavdsvsbsd.jpg 1000w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacsavdsvsbsd-300x210.jpg 300w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacsavdsvsbsd-768x538.jpg 768w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/ascacsavdsvsbsd-600x420.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-structural-weight-advantage\">\u0645\u064a\u0632\u0629 \u0627\u0644\u0648\u0632\u0646 \u0627\u0644\u0647\u064a\u0643\u0644\u064a<\/h3>\n\n\n\n<p>\u0648\u0632\u0646 \u063a\u0637\u0627\u0621 \u062d\u062f\u064a\u062f \u0627\u0644\u062f\u0643\u062a\u0627\u064a\u0644 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0645\u0646 50 \u0643\u062c\u0645 \u0625\u0644\u0649 120 \u0643\u062c\u0645 \u062d\u0633\u0628 \u0627\u0644\u062d\u062c\u0645<\/li>\n<\/ul>\n\n\n\n<p>\u0648\u0647\u0630\u0627 \u064a\u062c\u0639\u0644 \u0627\u0644\u0633\u0631\u0642\u0629 \u0623\u0643\u062b\u0631 \u0635\u0639\u0648\u0628\u0629 \u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u0627\u0644\u0645\u0648\u0627\u062f \u0627\u0644\u0645\u0631\u0643\u0628\u0629.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-locking-and-security-systems\">\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0642\u0641\u0644 \u0648\u0627\u0644\u0623\u0645\u0646<\/h3>\n\n\n\n<p>\u0627\u0644\u062a\u0635\u0627\u0645\u064a\u0645 \u0627\u0644\u062d\u062f\u064a\u062b\u0629 \u062a\u0634\u0645\u0644:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0622\u0644\u064a\u0627\u062a \u0642\u0641\u0644 \u0627\u0644\u062a\u0631\u0628\u0627\u0633<\/li>\n\n\n\n<li>\u0623\u063a\u0637\u064a\u0629 \u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0645\u0641\u0635\u0644\u064a\u0629<\/li>\n\n\n\n<li>\u0623\u0646\u0638\u0645\u0629 \u062a\u062b\u0628\u064a\u062a \u0627\u0644\u0625\u0637\u0627\u0631 \u0627\u0644\u0645\u0636\u0645\u0646\u0629<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-smart-anti-theft-monitoring\">\u0645\u0631\u0627\u0642\u0628\u0629 \u0630\u0643\u064a\u0629 \u0644\u0645\u0643\u0627\u0641\u062d\u0629 \u0627\u0644\u0633\u0631\u0642\u0629<\/h3>\n\n\n\n<p>\u0627\u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0646\u0627\u0634\u0626\u0629 \u062a\u062a\u0643\u0627\u0645\u0644:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0634\u0631\u0627\u0626\u062d \u062a\u062a\u0628\u0639 RFID<\/li>\n\n\n\n<li>\u0648\u0636\u0639 \u0639\u0644\u0627\u0645\u0627\u062a \u0639\u0644\u0649 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u062a\u064a \u062a\u062f\u0639\u0645 \u0646\u0638\u0627\u0645 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0648\u0627\u0642\u0639<\/li>\n\n\n\n<li>\u062a\u0646\u0628\u064a\u0647\u0627\u062a \u0627\u0644\u0646\u0632\u0648\u062d \u0641\u064a \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u062d\u0642\u064a\u0642\u064a<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-corrosion-protection-and-surface-engineering-standards\">\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062d\u0645\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u062a\u0622\u0643\u0644 \u0648\u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0623\u0633\u0637\u062d<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-coating-technologies\">\u062a\u0642\u0646\u064a\u0627\u062a \u0627\u0644\u0637\u0644\u0627\u0621<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0637\u0644\u0627\u0621 \u0631\u0627\u062a\u0646\u062c\u0627\u062a \u0627\u0644\u0627\u064a\u0628\u0648\u0643\u0633\u064a (\u0627\u0644\u062f\u0631\u062c\u0629 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629)<\/li>\n\n\n\n<li>\u0637\u0644\u0627\u0621 \u0648\u0627\u0642\u064a \u0645\u0646 \u0627\u0644\u0628\u064a\u062a\u0648\u0645\u064a\u0646<\/li>\n\n\n\n<li>\u0637\u0628\u0642\u0627\u062a \u0645\u0636\u0627\u062f\u0629 \u0644\u0644\u062a\u0622\u0643\u0644 \u063a\u0646\u064a\u0629 \u0628\u0627\u0644\u0632\u0646\u0643<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-environmental-performance-data\">\u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0623\u062f\u0627\u0621 \u0627\u0644\u0628\u064a\u0626\u064a<\/h3>\n\n\n\n<p>\u062a\u0638\u0647\u0631 \u0627\u0644\u062f\u0631\u0627\u0633\u0627\u062a \u0627\u0644\u0645\u064a\u062f\u0627\u0646\u064a\u0629:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u0623\u063a\u0637\u064a\u0629 \u0627\u0644\u0645\u063a\u0644\u0641\u0629 \u0627\u0644\u0623\u062e\u064a\u0631\u0629 <strong>30 \u0628\u0648\u0635\u062950% \u0623\u0637\u0648\u0644<\/strong> \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u0633\u0627\u062d\u0644\u064a\u0629<\/li>\n\n\n\n<li>\u0627\u0646\u062e\u0641\u0636 \u0645\u0639\u062f\u0644 \u0627\u0644\u062a\u0622\u0643\u0644 \u0628\u0645\u0627 \u064a\u0635\u0644 \u0625\u0644\u0649 <strong>65%<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-installation-engineering-guidelines\">\u0625\u0631\u0634\u0627\u062f\u0627\u062a \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u062a\u062b\u0628\u064a\u062a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-structural-foundation-requirements\">\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0623\u0633\u0627\u0633 \u0627\u0644\u0647\u064a\u0643\u0644\u064a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 \u0644\u0633\u0645\u0643 \u0627\u0644\u0641\u0631\u0627\u0634 \u0627\u0644\u062e\u0631\u0633\u0627\u0646\u064a: 150 \u0628\u0648\u0635\u0629 200 \u0645\u0644\u0645<\/li>\n\n\n\n<li>\u0645\u0637\u0644\u0648\u0628 \u062a\u0639\u0632\u064a\u0632 \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u062d\u0645\u0644<\/li>\n\n\n\n<li>\u0627\u0644\u062a\u0633\u0627\u0645\u062d \u0641\u064a \u0645\u062d\u0627\u0630\u0627\u0629 \u0627\u0644\u0625\u0637\u0627\u0631: \u00b12 \u0645\u0645<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-road-surface-integration-standards\">\u0645\u0639\u0627\u064a\u064a\u0631 \u062a\u0643\u0627\u0645\u0644 \u0633\u0637\u062d \u0627\u0644\u0637\u0631\u064a\u0642<\/h3>\n\n\n\n<p>\u0623\u0633\u0628\u0627\u0628 \u0627\u0644\u062a\u062b\u0628\u064a\u062a \u063a\u064a\u0631 \u0627\u0644\u0635\u062d\u064a\u062d\u0629:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0623\u0636\u0631\u0627\u0631 \u0635\u062f\u0645\u0629 \u0627\u0644\u0633\u064a\u0627\u0631\u0629<\/li>\n\n\n\n<li>\u0627\u0644\u062a\u0644\u0648\u062b \u0627\u0644\u0636\u0648\u0636\u0627\u0626\u064a<\/li>\n\n\n\n<li>\u0625\u0632\u0627\u062d\u0629 \u0627\u0644\u0625\u0637\u0627\u0631<\/li>\n<\/ul>\n\n\n\n<p>\u064a\u0636\u0645\u0646 \u0627\u0644\u062a\u062b\u0628\u064a\u062a \u0627\u0644\u0645\u0646\u0627\u0633\u0628 \u0645\u062d\u0627\u0630\u0627\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 \u0645\u0639 \u0633\u0637\u062d \u0627\u0644\u0623\u0633\u0641\u0644\u062a.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-global-infrastructure-case-studies\">\u062f\u0631\u0627\u0633\u0627\u062a \u062d\u0627\u0644\u0629 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u0639\u0627\u0644\u0645\u064a\u0629<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-smart-city-upgrade-project-europe\">\u0645\u0634\u0631\u0648\u0639 \u062a\u0631\u0642\u064a\u0629 \u0627\u0644\u0645\u062f\u064a\u0646\u0629 \u0627\u0644\u0630\u0643\u064a\u0629 (\u0623\u0648\u0631\u0648\u0628\u0627)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062a\u0645 \u0627\u0633\u062a\u0628\u062f\u0627\u0644 12000 \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629<\/li>\n\n\n\n<li>\u0627\u0644\u062d\u062f \u0645\u0646 \u0627\u0644\u062d\u0648\u0627\u062f\u062b: 21%<\/li>\n\n\n\n<li>\u062a\u062e\u0641\u064a\u0636 \u062a\u0643\u0644\u0641\u0629 \u0627\u0644\u0635\u064a\u0627\u0646\u0629: 27%<\/li>\n\n\n\n<li>\u062a\u0645\u062f\u064a\u062f \u062f\u0648\u0631\u0629 \u0627\u0644\u062d\u064a\u0627\u0629: +15 \u0633\u0646\u0629<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-coastal-industrial-port-project-asia\">\u0645\u0634\u0631\u0648\u0639 \u0627\u0644\u0645\u064a\u0646\u0627\u0621 \u0627\u0644\u0635\u0646\u0627\u0639\u064a \u0627\u0644\u0633\u0627\u062d\u0644\u064a (\u0622\u0633\u064a\u0627)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0623\u063a\u0637\u064a\u0629 \u0641\u0626\u0629 F900 \u0627\u0644\u0645\u062b\u0628\u062a\u0629<\/li>\n\n\n\n<li>\u0635\u0641\u0631 \u0641\u0634\u0644 \u0647\u064a\u0643\u0644\u064a \u0641\u064a 5 \u0633\u0646\u0648\u0627\u062a<\/li>\n\n\n\n<li>\u062a\u0645 \u062a\u062d\u0633\u064a\u0646 \u0627\u0633\u062a\u0642\u0631\u0627\u0631 \u0627\u0644\u062d\u0645\u0644 \u0628\u0648\u0627\u0633\u0637\u0629 38%<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-urban-flood-prevention-project\">\u0645\u0634\u0631\u0648\u0639 \u0627\u0644\u0648\u0642\u0627\u064a\u0629 \u0645\u0646 \u0627\u0644\u0641\u064a\u0636\u0627\u0646\u0627\u062a \u0627\u0644\u062d\u0636\u0631\u064a\u0629<\/h3>\n\n\n\n<p>\u062a\u062e\u0641\u064a\u0636 \u0646\u0638\u0627\u0645 \u0627\u0644\u0635\u0631\u0641 \u0627\u0644\u0635\u062d\u064a \u0627\u0644\u0645\u062d\u062f\u062b:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062d\u0648\u0627\u062f\u062b \u0627\u0644\u0641\u064a\u0636\u0627\u0646\u0627\u062a \u0628\u0645\u0642\u062f\u0627\u0631 32%<\/li>\n\n\n\n<li>\u062a\u0643\u0627\u0644\u064a\u0641 \u0627\u0644\u0625\u0635\u0644\u0627\u062d \u0641\u064a \u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0637\u0648\u0627\u0631\u0626 \u0628\u062d\u0644\u0648\u0644 18%<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-market-trends-in-manhole-cover-cast-iron-industry\">\u0627\u062a\u062c\u0627\u0647\u0627\u062a \u0627\u0644\u0633\u0648\u0642 \u0641\u064a <a href=\"https:\/\/shengxinfoundry.com\/ar\/product-category\/spheroidal-graphite-cast-iron-manhole-cover\/\">\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631<\/a> \u0635\u0646\u0627\u0639\u0629<\/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\/saxacsacasdv.jpg\" alt=\"\" class=\"wp-image-1061\" style=\"object-fit:cover;width:500px;height:400px\" srcset=\"https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/saxacsacasdv.jpg 1000w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/saxacsacasdv-300x210.jpg 300w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/saxacsacasdv-768x538.jpg 768w, https:\/\/shengxinfoundry.com\/wp-content\/uploads\/2026\/03\/saxacsacasdv-600x420.jpg 600w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-smart-infrastructure-integration\">\u062a\u0643\u0627\u0645\u0644 \u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u0630\u0643\u064a\u0629<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0623\u0646\u0638\u0645\u0629 \u0645\u0631\u0627\u0642\u0628\u0629 \u0627\u0644\u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0642\u0627\u0626\u0645\u0629 \u0639\u0644\u0649 \u0625\u0646\u062a\u0631\u0646\u062a \u0627\u0644\u0623\u0634\u064a\u0627\u0621<\/li>\n\n\n\n<li>\u062a\u062d\u0644\u064a\u0644\u0627\u062a \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0627\u0644\u062a\u0646\u0628\u0624\u064a\u0629<\/li>\n\n\n\n<li>\u062a\u0634\u062e\u064a\u0635\u0627\u062a \u0627\u0644\u0635\u062d\u0629 \u0627\u0644\u0647\u064a\u0643\u0644\u064a\u0629 \u0627\u0644\u0645\u0639\u062a\u0645\u062f\u0629 \u0639\u0644\u0649 \u0627\u0644\u0630\u0643\u0627\u0621 \u0627\u0644\u0627\u0635\u0637\u0646\u0627\u0639\u064a<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-global-market-growth\">\u0646\u0645\u0648 \u0627\u0644\u0633\u0648\u0642 \u0627\u0644\u0639\u0627\u0644\u0645\u064a\u0629<\/h3>\n\n\n\n<p>\u062a\u0642\u0627\u0631\u064a\u0631 \u0627\u0644\u0635\u0646\u0627\u0639\u0629 (\u062a\u0648\u0642\u0639\u0627\u062a 2025):<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0646\u0645\u0648 \u062d\u062c\u0645 \u0627\u0644\u0633\u0648\u0642: 5.8% CAGR<\/li>\n\n\n\n<li>\u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0623\u0643\u062b\u0631 \u0637\u0644\u0628\u0627: \u0622\u0633\u064a\u0627 \u0648\u0627\u0644\u0645\u062d\u064a\u0637 \u0627\u0644\u0647\u0627\u062f\u0626\u060c \u0627\u0644\u0634\u0631\u0642 \u0627\u0644\u0623\u0648\u0633\u0637\u060c \u0623\u0641\u0631\u064a\u0642\u064a\u0627<\/li>\n\n\n\n<li>\u0632\u064a\u0627\u062f\u0629 \u0627\u0644\u0637\u0644\u0628 \u0639\u0644\u0649 \u0623\u063a\u0637\u064a\u0629 \u0641\u0626\u0629 D400+<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-sustainability-and-recycling-trends\">\u0627\u062a\u062c\u0627\u0647\u0627\u062a \u0627\u0644\u0627\u0633\u062a\u062f\u0627\u0645\u0629 \u0648\u0625\u0639\u0627\u062f\u0629 \u0627\u0644\u062a\u062f\u0648\u064a\u0631<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0645\u0639\u062f\u0644 \u0625\u0639\u0627\u062f\u0629 \u062a\u062f\u0648\u064a\u0631 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631:&gt;90%<\/li>\n\n\n\n<li>\u0627\u0639\u062a\u0645\u0627\u062f \u0627\u0644\u0627\u0642\u062a\u0635\u0627\u062f \u0627\u0644\u062f\u0627\u0626\u0631\u064a \u0641\u064a \u0627\u0644\u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0628\u0644\u062f\u064a\u0629<\/li>\n\n\n\n<li>\u0638\u0647\u0648\u0631 \u062a\u0642\u0646\u064a\u0627\u062a \u0627\u0644\u0625\u0646\u062a\u0627\u062c \u0645\u0646\u062e\u0641\u0636 \u0627\u0644\u0643\u0631\u0628\u0648\u0646<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-economic-impact-of-manhole-cover-cast-iron-selection\">\u0627\u0644\u062a\u0623\u062b\u064a\u0631 \u0627\u0644\u0627\u0642\u062a\u0635\u0627\u062f\u064a \u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0644\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-cost-vs-lifecycle-efficiency\">\u0627\u0644\u062a\u0643\u0644\u0641\u0629 \u0645\u0642\u0627\u0628\u0644 \u0643\u0641\u0627\u0621\u0629 \u062f\u0648\u0631\u0629 \u0627\u0644\u062d\u064a\u0627\u0629<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0639\u0627\u0645\u0644<\/th><th>\u0623\u063a\u0637\u064a\u0629 \u0645\u0646\u062e\u0641\u0636\u0629 \u0627\u0644\u062f\u0631\u062c\u0629<\/th><th>\u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0642\u064a\u0627\u0633\u064a<\/th><\/tr><\/thead><tbody><tr><td>\u0627\u0644\u062a\u0643\u0644\u0641\u0629 \u0627\u0644\u0623\u0648\u0644\u064a\u0629<\/td><td>\u0645\u0646\u062e\u0641\u0636<\/td><td>\u0645\u062a\u0648\u0633\u0637<\/td><\/tr><tr><td>\u062a\u0643\u0644\u0641\u0629 \u0627\u0644\u0635\u064a\u0627\u0646\u0629<\/td><td>\u0639\u0627\u0644\u064a<\/td><td>\u0645\u0646\u062e\u0641\u0636<\/td><\/tr><tr><td>\u0639\u0645\u0631<\/td><td>5 \u0628\u064a\u0646 10 \u0633\u0646\u0648\u0627\u062a<\/td><td>20-40 \u0633\u0646\u0629<\/td><\/tr><tr><td>\u062e\u0637\u0631 \u0627\u0644\u0641\u0634\u0644<\/td><td>\u0639\u0627\u0644\u064a<\/td><td>\u0645\u0646\u062e\u0641\u0636<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-infrastructure-roi-analysis\">\u062a\u062d\u0644\u064a\u0644 \u0639\u0627\u0626\u062f \u0627\u0644\u0627\u0633\u062a\u062b\u0645\u0627\u0631 \u0644\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629<\/h3>\n\n\n\n<p>\u0633\u0644\u064a\u0645 <strong><a href=\"https:\/\/shengxinfoundry.com\/ar\/product-category\/spheroidal-graphite-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<\/a><\/strong> \u062a\u062d\u0633\u064a\u0646 \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0639\u0627\u0626\u062f \u0627\u0644\u0627\u0633\u062a\u062b\u0645\u0627\u0631 \u0644\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0628\u0645\u0642\u062f\u0627\u0631 18 \u062f\u0631\u062c\u0629 30%<\/li>\n\n\n\n<li>\u062a\u0642\u0644\u064a\u0644 \u062a\u0631\u062f\u062f \u0627\u0644\u0635\u064a\u0627\u0646\u0629 \u0628\u0645\u0642\u062f\u0627\u0631 40%<\/li>\n\n\n\n<li>\u062a\u062e\u0641\u064a\u0636 \u062a\u0643\u0644\u0641\u0629 \u0627\u0644\u0625\u0635\u0644\u0627\u062d \u0641\u064a \u062d\u0627\u0644\u0627\u062a \u0627\u0644\u0637\u0648\u0627\u0631\u0626 \u0628\u0645\u0642\u062f\u0627\u0631 25%<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-2-frequently-asked-questions-faq\">\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-what-is-manhole-cover-cast-iron-used-for\">\u0645\u0627 \u0647\u064a \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0627\u062a \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062a\u0641\u062a\u064a\u0634 \u0645\u0646 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631\u061f<\/h3>\n\n\n\n<p>\u064a\u062a\u0645 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647 \u0644\u062d\u0645\u0627\u064a\u0629 \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0645\u0631\u0627\u0641\u0642 \u062a\u062d\u062a \u0627\u0644\u0623\u0631\u0636 \u0645\u0639 \u062f\u0639\u0645 \u0623\u062d\u0645\u0627\u0644 \u0627\u0644\u0645\u0631\u0643\u0628\u0627\u062a \u0648\u0627\u0644\u0645\u0634\u0627\u0629.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-why-is-ductile-iron-preferred-over-gray-cast-iron\">\u0644\u0645\u0627\u0630\u0627 \u064a\u0641\u0636\u0644 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0645\u0631\u0646 \u0639\u0644\u0649 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631 \u0627\u0644\u0631\u0645\u0627\u062f\u064a\u061f<\/h3>\n\n\n\n<p>\u0644\u0623\u0646\u0647 \u064a\u0648\u0641\u0631 \u0642\u0648\u0629 \u0634\u062f \u0623\u0639\u0644\u0649\u060c \u0648\u0645\u0642\u0627\u0648\u0645\u0629 \u0623\u0641\u0636\u0644 \u0644\u0644\u0635\u062f\u0645\u0627\u062a\u060c \u0648\u0639\u0645\u0631 \u062e\u062f\u0645\u0629 \u0623\u0637\u0648\u0644.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-how-long-does-a-cast-iron-manhole-cover-last\">\u0643\u0645 \u0645\u0646 \u0627\u0644\u0648\u0642\u062a \u064a\u0633\u062a\u0645\u0631 \u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0627\u0644\u062d\u062f\u064a\u062f \u0627\u0644\u0632\u0647\u0631\u061f<\/h3>\n\n\n\n<p>\u0639\u0627\u062f\u0629\u064b \u0645\u0627 \u062a\u0643\u0648\u0646 20 \u0625\u0644\u0649 40 \u0639\u0627\u0645\u064b\u0627 \u0627\u0639\u062a\u0645\u0627\u062f\u064b\u0627 \u0639\u0644\u0649 \u0641\u0626\u0629 \u0627\u0644\u062a\u062d\u0645\u064a\u0644 \u0648\u0627\u0644\u0628\u064a\u0626\u0629.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-3-what-is-the-strongest-manhole-cover-class\">\u0645\u0627 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\u0627\u0644\u0639\u0627\u0644\u0645.<\/p>","protected":false},"author":1,"featured_media":2532,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-2531","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/posts\/2531","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/comments?post=2531"}],"version-history":[{"count":1,"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/posts\/2531\/revisions"}],"predecessor-version":[{"id":2533,"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/posts\/2531\/revisions\/2533"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/media\/2532"}],"wp:attachment":[{"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/media?parent=2531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/categories?post=2531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shengxinfoundry.com\/ar\/wp-json\/wp\/v2\/tags?post=2531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}