Lightweight Composite Sewer Cover for Infrastructure
- Specification: Φ400mm
- Material: SMC /BMC
- Color: Black, Grey, Green, Blue, or Customized
- Application: Municipal Roads,Residential Areas
- Standard:En124-1:2015
Product Inquiry
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- Description
The BAOGAI Advantage: Listed Excellence & Precision Engineering
Experience the difference of partnering with the industry leader.
- The Industry’s Only Listed Company:
As the only listed company in China’s composite manhole cover industry, BAOGAI provides a level of quality assurance and supply chain stability that is unmatched. Our financial transparency and ISO-certified processes guarantee a risk-free procurement experience for global engineering projects.
- Advanced In-House SMC Tooling:
Unlike factories that outsource their molds, we design and manufacture our own high-precision SMC molds in-house. This ensures that every Φ400mm cover fits its frame with extreme accuracy, eliminating rattling and ensuring a uniform surface finish. It also allows us to offer rapid customization for logos and unique anti-slip patterns.
Product Overview
The BAOGAI Φ400mm Premium Lightweight Sewer Cover represents the premium tier of lightweight access solutions. Rated for Load Class A15, this cover is crafted from high-strength Sheet Molding Compound (SMC), offering superior mechanical properties and a longer service life compared to BMC or traditional concrete alternatives. It is the perfect choice for high-end residential projects, park landscapes, and pedestrian zones.
Technical Specifications
MAIN PARAMETER
|
Feature |
Details |
|
Product Model |
BG-R400-A15 |
|
Material |
SMC (Sheet Molding Compound), a High-strength Composite Material |
|
Load Class |
A15 |
|
Standard |
BS EN124 |
|
Frame Height (H) |
40 mm |
|
Outer Dimension |
400 mm |
|
Service Life |
30 Years |
|
Operating Temperature |
-40°C to +60°C |
|
Color |
Black, Grey, Green, Yellow or Customized |
Why Choose SMC Over BMC?
- Higher Strength-to-Weight Ratio: SMC uses longer glass fibers, providing better tensile and flexural strength than BMC.
- Superior Finish: SMC products have a smoother, more refined surface that maintains its aesthetic appeal even after decades of UV exposure.
- Enhanced Fatigue Resistance: Designed to withstand millions of pedestrian cycles without structural degradation.

Target Applications
- High-End Residential: Garden paths, courtyards, and patios.
- Public Parks: Green belts, playgrounds, and landscape drainage.
- Pedestrian Zones: Sidewalks and shopping plazas where aesthetics matter.
- Utilities: Cable pits and water meter boxes in light-duty areas.
FAQ
Q1: What is the main difference between your SMC and BMC covers?
A: SMC (Sheet Molding Compound) uses longer glass fiber reinforcement, making it stronger and more durable than BMC. SMC also offers a higher quality surface finish and better resistance to aging.
Q2: Can I get my company logo embossed on this Φ400 cover?
A: Yes! Because we have our own mold factory, we can quickly and affordably customize the mold to include your logo, city emblem, or specific markings like “Fiber Optic” or “Water”.
Q3: Is A15 suitable for a driveway?
A: No. A15 is strictly for pedestrians and cyclists. For residential driveways with car traffic, we recommend our B125 SMC series.
Q4: How does being a listed company affect your product price?
A: Our scale as a listed company allows for massive raw material purchasing power and highly automated production, meaning you get premium SMC quality at a highly competitive factory price.