The Composite Resin Rain Grate (also known as polymer composite or fiberglass reinforced plastic rain grate) is a key component of drainage systems in municipal roads, parks, factories, and more. It is made of unsaturated polyester resin, high-strength glass fiber, and mineral fillers, with a built-in steel reinforcement framework, formed through one-time high-temperature and high-pressure molding.
Compared to traditional cast iron grates, this Composite Resin Rain Grate offers multiple advantages:
Applications include:
This Composite Resin Rain Grate is durable, functional, and environmentally friendly, making it the preferred solution for modern urban and industrial drainage projects.

The Composite Resin Rain Grate, also known as polymer composite or fiberglass reinforced plastic rain grate, is a key component of modern drainage systems in municipal roads, parks, residential communities, factories, and commercial complexes. Constructed from unsaturated polyester resin, high-strength glass fiber, and mineral fillers with a built-in steel reinforcement framework, it is formed through a one-time high-temperature and high-pressure molding process.
Compared to traditional cast iron grates, this Composite Resin Rain Grate offers multiple advantages:
This makes it an ideal solution for modern drainage projects, combining durability, functionality, and environmental friendliness.
The main body of the Composite Resin Rain Grate is made from corrosion-resistant unsaturated resin, reinforced in three dimensions with glass fiber and heavy calcium mineral fillers. A steel reinforcement framework is added at the bottom to ensure an optimal balance of strength and toughness, providing reliable performance even under heavy loads and harsh environmental conditions.
The grate is formed in a single piece using high-temperature and high-pressure molding, eliminating the need for secondary assembly. This process results in a dense, dimensionally accurate structure, with minimal gaps between the grate and its seat. Such precision ensures a secure fit, reduces noise, and prolongs the service life of the product.
The surface of the Composite Resin Rain Grate features an anti-slip texture, available in stripes or dots, and can be customized in colors like green, gray, or black. Some models can even mimic the appearance of natural stone, allowing the grate to blend seamlessly with different road and landscape styles.
This Composite Resin Rain Grate is suitable for a wide range of environments:
| Feature | Details |
|---|---|
| Product Size | Customers can customize color, logo, text, and design |
| In-Stock Sizes | 200mm500mm, 300mm500mm, 400mm600mm, 450mm750mm, 500mm500mm, 500mm1000mm, 600mm600mm, 600mm800mm, 1000mm1000mm, 1000mm1500mm, 1000mm*2000mm |
| 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 Composite Resin Rain Grate combines strength, corrosion resistance, anti-slip safety, and aesthetic flexibility, making it an excellent choice for modern urban and industrial drainage solutions. Its lightweight, durable, and anti-theft design ensures long-term reliability while meeting environmental and functional requirements for diverse applications.
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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.