The D400 Double Triangular Ductile Iron Manhole Cover is engineered for high-performance applications, particularly on carriageways and areas with fast-moving traffic. With a clear opening size of 750 x 750 mm and a frame depth of 100 mm, this cover is designed to withstand heavy loads and ensure durability in demanding environments.
Key Features:
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Material: Manufactured from high-strength ductile iron, known for its exceptional durability and resistance to impact and corrosion.
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Dimensions:
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Clear Opening: 750 mm x 750 mm.
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Overall Frame Size: 965 mm x 965 mm.
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Frame Depth: 100 mm.
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Load Rating: Class D400, capable of withstanding up to 40 tonnes (400 kN), making it suitable for areas with heavy vehicular traffic.
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Design: Features a double triangular three-point suspension system, ensuring non-rock stability and secure closure.
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Compliance: Fully compliant with EN124 standards, ensuring high safety and quality standards.
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Applications: Ideal for use in carriageways, highways, and other areas subjected to high traffic loads.
Benefits:
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Enhanced Safety: The robust design minimizes the risk of accidents caused by dislodged covers.
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Longevity: The ductile iron construction offers a long service life, reducing the need for frequent replacements.
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Ease of Maintenance: Designed for easy installation and maintenance, reducing downtime and associated costs.
| Family: | Municipal |
| Product Type: | Access Covers |
| Certified Class: | D400 |
| Standards: | EN124 |
| Surface Finish: | ANTI-SLIP OTHER SURFACE |
| Clear Opening Length (Hinge Side): | 750 mm |
| Clear Opening Width: | 750 mm |
| Flange Outer Length: | 900 mm |
| Flange Outer Width: | 900 mm |
| Frame Height: | 100 mm |
| Weight: | 110 kg |
| Cover/Grating Shape: | Triangular |
Ductile iron manhole cover specifications and parameters
| Parameter | Specification/Value |
|---|---|
| Material | Ductile Cast Iron (Grade 500-7) |
| Standard Compliance | EN 124, BS 497, ASTM A536, ISO 1083 |
| Shape | Round, Square, Oval |
| Load Rating | A15, B125, C250, D400, E600, F900 (EN 124 load classes) |
| Load Bearing Capacity | 1.5 – 90 tons (depending on the rating) |
| Size (Diameter/Length) | 300mm – 1500mm (depending on type and design) |
| Thickness of Lid | 20mm – 60mm (depending on the load class) |
| Weight | 10 kg to 150 kg (depending on size and class) |
| Cover Surface | Smooth, Anti-slip, Textured for grip |
| Corrosion Resistance | Excellent, with epoxy coatings or bituminous treatment |
| Gasket Type | Rubber, Neoprene, EPDM |
| Sealing Mechanism | Bolt-down, Locking system, Hinged |
| Drainage Holes | Yes, optional (for water drainage) |
| Coating Type | Bitumen coated, Epoxy coating, Hot-dip galvanizing |
| Temperature Resistance | -30°C to +150°C (depending on coating type) |
| Fire Resistance | Flame-retardant (meets local standards for fire resistance) |
| Noise Level | Low noise design for urban areas |
| Ventilation | Optional vented covers for gas or sewage systems |
| Color | Black, Gray, Custom colors available |
| Manufacturing Process | Sand casting, Lost wax casting, Centrifugal casting |
| Edge Type | Flat, Raised, Beveled, or Reinforced edges |
| Bearing Surface | Cast iron, Epoxy, Stainless Steel (optional) |
| Longevity | 50+ years with proper maintenance |
| Environmental Compliance | RoHS, REACH, and other regional environmental standards |
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