Rated MD10 (10T load) (equivalent to C250 standard), suitable for urban roads, light vehicle lanes, and water utility areas with medium traffic.
Reinforced composite structure resists cracking/deformation under heavy loads, meeting municipal infrastructure safety requirements.
Weighs 40% less than cast-iron covers (≈25kg vs. 42kg for same size), reducing labor intensity during installation.
SMC composite material is immune to rust, chemical corrosion, and moisture—ideal for underground/wet water utility environments (service life 2× longer than cast iron).
Non-metallic material has no recycling value, eliminating theft risks (a common issue with cast-iron covers).
Supports custom engraving (e.g., "Suizhou Water Affairs" logo, load rating "10T") and anti-slip cross-texture surface.
Electrical insulation performance avoids leakage risks in water-electricity mixed scenes.
Smooth edge design + anti-slip texture reduces pedestrian/vehicle slip hazards; no regular rust removal required.
| Parameter | Specification | Notes |
|---|---|---|
| Product Size | 700mm (diameter) | Standard water utility manhole size |
| Material | SMC/FRP composite (glass fiber reinforced) | Lightweight & high-strength |
| Load Rating | 10T (MD10 / C250) | Suitable for urban roads/light vehicles |
| Surface Finish | Anti-slip cross texture + custom logo | "Suizhou Water Affairs" engraving available |
| Operating Temperature | -40°C to +120°C | Adapt to outdoor/underground environments |
| Service Life | ≥20 years | Low degradation in wet conditions |
Municipal water supply inspection wells
Urban road water utility pipelines
Residential community water infrastructure
Water department network maintenance projects
Coastal area water facilities (corrosion-resistant demand)
| Feature | Composite Cover (This Product) | Cast-Iron Cover |
|---|---|---|
| Weight (700mm size) | ~25kg | ~42kg |
| Corrosion Resistance | Excellent (no rust) | Poor (rusts in 2-3 years) |
| Anti-Theft Property | High (no recycle value) | Low (easily stolen) |
| Installation Efficiency | 1-person operation | Requires 2+ workers |
| Maintenance Cost | ≤$5/year (cleaning only) | ≥$30/year (rust removal + replacement) |
Clean the manhole opening and check the frame fit
Place the support frame (custom-sized for 700mm opening)
Lay the composite cover and lock the snap fasteners
Conduct load test (light vehicle pressure) to confirm stability
Clean surface debris monthly to maintain anti-slip performance
Inspect snap fasteners quarterly (after heavy rain/floods)
No painting or rust treatment required
Customization Support: Logo engraving (e.g., "Suizhou Water Affairs"), size/load adjustment
Certifications: ISO9001 quality system, municipal infrastructure material qualification
Experience: 15+ years supplying water utility manhole covers for 200+ city projects
After-Sales: 5-year warranty, on-site installation guidance for bulk orders
