This E600 multileaf cover and frame features a 1220 × 685 mm clear opening, divided into manageable interlocking leaves for safer lifting and handling under extreme wheel loads; it is rated to Class E600 (600 kN test load) for docks, ports, and motorways, and is fully compliant with BS EN 124‑2:2015 specifications for non‑rock, quiet operation. Crafted from GGG500/7 spheroidal graphite (ductile) iron per ISO 1083, it delivers a strength‑to‑weight ratio comparable to low‑alloy steels and exceptional fatigue performance. Precision‑machined seating on a three‑point suspension system ensures a flush, non‑rock fit, while a slip‑resistant top pattern enhances pedestrian safety. The robust frame (approx. 1365 × 845 × 100 mm) efficiently transfers loads into the surrounding pavement, and optional corrosion‑resistant coatings extend service life in harsh environments.
Material & Construction
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Ductile Iron Grade
Produced from GGG500/7 (ISO 1083/JS 500‑7) spheroidal graphite iron, offering a minimum tensile strength of 500 MPa and proof stress of 320 MPa for outstanding durability. -
Multileaf Design
Three interlocking leaves distribute weight evenly, reducing individual lift loads to under 20 kg per leaf and simplifying on‑site handling.
Technical Specifications
| Specification | Details |
|---|---|
| Clear Opening | 1220 × 685 mm |
| External Frame | ~1365 × 845 × 100 mm (L × W × Depth) |
| Load Class | E600 (600 kN / 60 t) |
| Assembly Weight | Approx. 4 × 20 kg (per leaf) → 80 kg total |
| Suspension System | Three‑point, non‑rock stability |
| Top Pattern | Slip‑resistant grid surface |
| Material Standard | ISO 1083/JS 500‑7 nodular iron |
| Coating Options | Standard 30 µm bitumen; optional epoxy or powder‐coat |
Quality & Compliance
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Standards
Engineered and load‑tested in accordance with BS EN 124‑2:2015 for Group 6 (E600) covers and gratings. -
Certification
Third‑party certification (e.g., BSI Kitemark or equivalent) ensures batch traceability, UK/EU regulatory compliance, and ongoing quality audits. -
Agency Approval
Meets Highways England CD 534 (formerly HA 104/09) requirements for highway access covers, including indexed corners and mechanical lifting points.
Applications & Benefits
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Extreme‑Load Zones
Ideal for docks, ports, airport aprons, motorways, and heavy‑industrial estates subject to wheel loads above 60 tonnes. -
Efficient Maintenance
Modular leaf design and hinged or lift‑out options reduce downtime and labor costs during inspections and repairs. -
Enhanced Safety
Slip‑resistant cover pattern and flush seating eliminate trip hazards and cover noise under traffic. -
Longevity
Corrosion‑resistant coatings and high‑performance nodular iron minimize lifecycle costs and extend service intervals.
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 |
