Product Overview
The FRP round manhole cover is designed for underground access applications where a lightweight and corrosion-resistant cover solution is required. The circular structure provides reliable protection for manholes, inspection points and underground utility systems.
Manufactured from BMC (Bulk Molding Compound), a fiberglass reinforced composite material, the cover combines structural stability with resistance to moisture, corrosion and outdoor environmental conditions. Compared with traditional metal covers, the FRP composite structure provides a rust-free and durable solution for long-term outdoor use.
Technical Details
- Material: BMC (Bulk Molding Compound) Fiberglass Reinforced Composite
- Shape: Round / Circular
- Product Type: FRP Composite Manhole Cover
- Structure: Compression Molded Composite Cover
- Application: Underground Access and Utility Protection
Technical Specifications
| Frame Size (mm) | Cover Size (mm) | Weight (kg) | Color |
|---|---|---|---|
| 400 | 300 | 10.8 | As required |
| 470 | 400 | 7.8 | As required |
| 580 | 500 | 14.7 | As required |
| 680 | 600 | 32.8 | As required |
| 780 | 700 | 23.4 | As required |
| 850 | 750 | 34.5 | As required |
| 900 | 800 | 37.2 | As required |
Key Features
- Fiberglass Reinforced Composite Structure – Manufactured from fiberglass reinforced composite material, providing reliable strength and durability for underground applications.
- Lightweight and Easy Installation – The composite structure reduces handling difficulty and simplifies installation compared with traditional metal covers.
- Corrosion and Weather Resistance – The material provides excellent resistance to moisture, corrosion and outdoor environmental exposure.
- Non-metallic and Rust-free Design – The FRP composite structure does not rust, making it suitable for wet, coastal and corrosive environments.
- Durable Compression Molded Construction – The compression molding process provides a stable structure and consistent performance for long-term outdoor applications.
- Low Maintenance Solution – The durable composite material helps reduce maintenance requirements and provides extended service life.
Applications
- Underground Utility Systems
- Inspection Chambers
- Sewer Access Points
- Drainage Infrastructure
- Municipal Projects
- Telecommunication Networks
- Industrial Facilities

















