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This product is made of QT500-7 ductile cast iron material and is precisely cast after being spheroidized and further spheroidized treatment. It features high strength, good toughness, impact resistance, wear resistance, and corrosion resistance, meeting the requirements of standard mechanical properties.
This product adopts an integrated/frame structure design. The water distribution holes on the rain grate are evenly and reasonably distributed, with a large water channel area, allowing for smooth drainage. It can quickly drain the water on the road surface. The surface is cast with anti-slip patterns, enhancing the safety of pedestrians and vehicles. The grate is closely fitted to the frame, providing functions of preventing displacement, noise reduction, and theft prevention, effectively avoiding problems such as rolling, jumping, theft, and loss.
The load-bearing grade of this product can meet different working conditions such as A15, C250, D400, E600, and F900. It is suitable for urban roads, sidewalks, squares, residential areas, parking lots, and municipal drainage systems. Installation is simple, the stability is good, and the service life is long. It is an ideal supporting facility for municipal rainwater drainage projects.
| Spheroidal graphite cast iron round manhole cover | |
| product size | Can be customized according to customer requirements In-Stock Sizes:300mm*500mm 350mm*500mm 380mm*680mm 400mm*500mm 400mm*600mm 450mm*750mm 500mm*500mm 500mm*1000mm 600mm*600mm 700mm*700mm 800mm*800mm |
| Packaging Dimension | Package according to the customer’s requirements, model and quantity. |
| weight | Different sizes, different weights |
| modes of packing | Simple bundling / Tray packaging |

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Multiple transportation options: road, sea, and air freight to meet diverse customer requirements.








High-load, corrosion-resistant, theft-proof, lightweight manhole covers, customizable.
Premium ductile iron and composite resin provide excellent load-bearing capacity.
Surface treatment and material selection ensure long-term durability.
Lightweight for easy transport and installation, reducing construction costs.
Available in multiple sizes and specifications to meet diverse project requirements.