Product Overview
The 450×450 mm square SMC composite manhole cover combines high strength with excellent electrical insulation properties. Manufactured from fiberglass reinforced SMC composite material, its non-metallic construction is anti-static, corrosion resistant, and has no recycling value, providing a reliable alternative to traditional cast iron covers.
Product Drawing

Key Features
- High strength SMC material – provides reliable load-bearing performance across multiple EN124 load classes
- Anti-static non-metallic construction – reduces static accumulation and eliminates scrap value
- Corrosion resistant – suitable for long-term outdoor use
- Lightweight design – simplifies handling, transportation, and installation
Specifications & Dimensions
| Load Class | Clear Opening | Cover Size | Frame Size | Overall Height | Cover Thickness | Weight |
|---|---|---|---|---|---|---|
| A15 | 450x450mm | 500x500mm | 590x590mm | 35mm | 25mm | 9kg |
| B125 | 450x450mm | 500x500mm | 590x590mm | 35mm | 25mm | 15kg |
| C250 | 450x450mm | 500x500mm | 620x620mm | 75mm | 50mm | 28kg |
| D400 | 450x450mm | 500x500mm | 620x620mm | 75mm | 50mm | 35kg |
Technical Specifications:
- Material: SMC Composite
- Clear Opening: 450 × 450 mm
- Load Class: A15 / B125 / C250 / D400
- Standard: EN124
- Shape: Square
- Locking System: Two Screw Locks
Applications
A15:
- Parks
- Green spaces
- Pedestrian walkways
B125:
- Residential sidewalks
- Light pedestrian traffic areas
C250:
- Kerbside installations
- Residential streets
- Light vehicle access areas
D400:
- Urban roads
- Commercial parking lots
- Vehicle traffic lanes
- Municipal infrastructure areas
FAQ
What is the weight of 450x450mm A15 cover?
The A15 version weighs 9kg, making it easy to handle and install.
Can you provide OEM / ODM service?
Yes. OEM and ODM services are available. Custom logo, color, surface pattern, and dimensions can be produced according to project requirements.
What is your delivery time?
Normally, the production lead time is about 15–25 days depending on order quantity and product specifications.
What is the MOQ?
MOQ depends on the product size and specifications. Please contact us for detailed information.
What packaging method do you use?
The products are normally packed on export pallets for safer transportation and easier loading and unloading.
Do you provide warranty and after-sales service?
Yes. We provide one-year warranty service and technical support for our products. Please contact us for detailed after-sales information and project assistance.














