600×600 D400 Ductile Iron Manhole Cover - 40 Ton Load Capacity for Heavy Traffic Areas
This 600×600mm square ductile iron manhole cover is engineered for heavy traffic applications with D400 load rating (40 tons capacity). The solid cover design provides complete sealing for gas and air-tight inspection chambers.
- High-grade ductile iron (EN-GJS-500-7 or QT500-7) construction
- Exceptional tensile strength, flexibility, and wear resistance
- Full compliance with EN124 standards for D400 and E600 load classes
- Precision square design for secure alignment with matching frames
- Solid structure prevents water ingress and odor leakage
- Textured anti-slip surface (grid, diamond, or custom patterns)
- Optional locking mechanisms and hinged designs available
- Corrosion-resistant coatings (bitumen, epoxy, or powder)
- Extended service life in demanding environments
| Load Class | Maximum Load | Application Scenarios |
|---|---|---|
| A15 | ≤1.5 tons | Pedestrian areas, green spaces |
| B125 | ≤12.5 tons | Sidewalks, non-motorized paths |
| C250 | ≤25 tons | Parking lots, residential roads |
| D400 | ≤40 tons | Urban roads, highways |
| E600 | ≤60 tons | Heavy-duty industrial zones, ports |
| F900 | ≤90 tons | Airports, container yards |
- Non-standard sizes and specifications
- Corporate logo and text engraving
- Intelligent monitoring solutions with data transmission
- Specialized surface treatments and coatings
SND Foundry brings 20+ years of metal manufacturing expertise using advanced techniques including sand casting, lost wax casting, and precision machining. Our ISO9001-certified quality control ensures consistent reliability through comprehensive testing including spectrometer analysis, ultrasonic inspection, and tensile strength verification.
We serve diverse industries including automotive, rail transportation, agricultural machinery, chemical processing, energy infrastructure, and construction sectors.
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