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The Square Composite Resin Manhole Cover is made from high-strength resin reinforced with glass fiber and calcium-based fillers, formed through a one-time high-temperature molding process. This environmentally friendly, lightweight composite cover offers excellent durability, resistance to acid and alkali corrosion, and a long service life, meeting relevant industry standards.
Designed for safety and reliability, the cover features a socket-type sealed structure, ensuring a precise fit with the manhole frame and effectively preventing:
The surface is anti-slip and provides excellent sealing to keep rainwater and debris out. Insulated and flame-retardant, it is ideal for light-load areas such as sidewalks, green belts, residential areas, parks, factory zones, communication wells, weak current wells, and gas wells.
With bearing grades A15, B125, and C250, the Square Composite Resin Manhole Cover is easy to install, low-maintenance, and environmentally friendly, making it a reliable choice for modern urban and industrial applications.

The Square Composite Resin Manhole Cover is manufactured from high-strength resin as the base material, reinforced with glass fiber and calcium-based fillers. Formed through a one-time high-temperature molding process, this composite material is lightweight yet highly durable. It is environmentally friendly, with no recycling value, providing long-term performance without compromising safety or quality. The cover resists both acid and alkali corrosion, is non-magnetic, and meets all relevant standards for urban and industrial applications.
This Square Composite Resin Manhole Cover features a socket-type sealed structure, ensuring a precise fit between the cover and the manhole ring. This design effectively solves common problems associated with traditional manhole covers, including:
The surface is anti-slip, providing additional safety for pedestrians and vehicles. The sealed design also prevents rainwater, debris, and other contaminants from entering the manhole, keeping the surrounding environment clean and secure.
The product is insulated and flame-retardant, fundamentally preventing theft and enhancing safety. Its lightweight construction makes installation easy while maintaining structural strength. These features make the Square Composite Resin Manhole Cover particularly suitable for light-load areas, such as:
The Square Composite Resin Manhole Cover meets the bearing grade requirements of A15, B125, and C250, ensuring reliable load-bearing performance. Installation is convenient, maintenance is simple, and the environmentally friendly design supports long-term usage in urban and industrial infrastructure projects.
| Feature | Details |
|---|---|
| Product Size | Customers can customize the color, logo, text, and design according to their requirements |
| In-Stock Sizes | 400mm400mm, 400mm600mm, 450mm750mm, 500mm500mm, 500mm1000mm, 600mm600mm, 600mm800mm, 700mm700mm, 800mm800mm, 800mm1200mm, 1000mm*1000mm |
| Packaging Dimension | Packaged according to customer requirements, model, and quantity |
| Weight | Different sizes have different weights; weight provided per customer requirements |
| Modes of Packing | Simple bundling / Tray packaging |
The Square Composite Resin Manhole Cover is a safe, durable, and environmentally friendly solution for modern infrastructure. Its anti-slip surface, theft-preventing design, flame-retardant material, and customizable options make it ideal for a wide range of applications, providing peace of mind and long-term reliability for both urban and industrial projects.
Get in touch with us for product inquiries, customized solutions, partnership opportunities, and professional support to help your projects succeed.
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.