Product Overview
The 300mm round SMC manhole cover is designed for underground utility access, drainage inspection systems, and pipeline maintenance applications. Its lightweight composite structure provides corrosion resistance, anti-static performance, and convenient handling compared with traditional cast iron covers. Available in EN124 C250 and D400 load classes for different traffic environments.
Key Benefits
High Load Capacity
- EN124 C250 and D400 load ratings suitable for pedestrian areas to heavy traffic roads
- D400 version withstands vehicle loads up to 40 tons for demanding environments
- C250 version ideal for parking lots, sidewalks, and residential zones
Durable Composite Material
- High-strength SMC composite provides corrosion and chemical resistance against fuels, oils, and salts
- Anti-static and flame-retardant properties for safety in sensitive installations
- Non-metal anti-theft design has no scrap value, deterring theft
Practical Design
- Waterproof sealing structure helps prevent leakage and water ingress into chambers
- Lightweight construction allows easy handling and quick installation without heavy equipment
- Complete set includes both cover and frame for ready-to-install convenience
Real Customer Feedback
We replaced old cast iron covers in our municipal drainage project with these SMC units. The weight difference is incredible — one person can handle the installation easily. After 6 months in a chemical plant environment, no signs of corrosion or deterioration. The sealing gasket keeps odors and water where they belong. Highly recommended for utility access points. – David R., Infrastructure Project Manager
Technical Specifications
- Clear Opening: 300mm
- Cover Size: 390mm
- Frame Size: 450mm
- Height: 63mm
- Material: SMC (Sheet Molding Compound) composite
- Load Classes: EN124 C250 and D400
- Features: Waterproof sealing, anti-static, flame-retardant, corrosion resistant
- Included Components: Cover and frame
Comparison Table
| Feature | 300mm SMC Manhole Cover | Traditional Cast Iron Cover | Standard Plastic Cover |
|---|---|---|---|
| Weight (approx.) | 8–10 kg (lightweight) | 35–45 kg (heavy) | 5–7 kg |
| Corrosion Resistance | Excellent (chemical resistant) | Poor (rusts over time) | Good |
| Theft Risk | Low (non-metal, no scrap value) | High (valuable scrap metal) | Low |
| Load Capacity | C250 to D400 (pedestrian to heavy traffic) | D400 available | A15 to B125 only |
| Sealing | Integrated waterproof gasket | None (requires add-on seal) | Optional |
| Installation | Easy (one person) | Difficult (lifting equipment often needed) | Easy
|
FAQ
Can you provide OEM / ODM service?
Yes. OEM and ODM service 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.
Does the cover have waterproof sealing structure?
Yes. The cover is equipped with a sealing structure designed to help prevent leakage and water ingress.
Is this product suitable for heavy traffic areas?
Yes. The D400 version is suitable for heavy-duty traffic environments according to EN124 standards.
Is the material resistant to fuel and chemicals?
Yes. SMC composite material provides excellent corrosion and chemical resistance for underground fuel system applications.
Does the product include the frame?
Yes. The product includes both the manhole cover and frame.
