This D400 Multileaf Manhole Cover – 600 × 600 mm is a heavy‑duty, multi‑part access solution cast from GGG500/7 ductile iron to deliver exceptional load performance and longevity. Rated to Class D400 (40 tonne test load), it fully complies with BS EN 124‑2:2015 and carries the BSI Kitemark, making it ideal for carriageways, main roads, airports, and other high‑traffic environments. The system’s 600 × 600 mm clear opening sits within an external frame of 672 × 672 × 100 mm (depth), while the total assembly weighs approximately 60 kg for manageable handling on‑site. Its multi‑leaf configuration divides the cover into smaller sections, reducing lifting loads and accelerating installation and maintenance tasks. A three‑point suspension design ensures non‑rock stability, and a unique slip‑resistant top pattern enhances pedestrian safety, while a standard 30 µm black bitumen coating protects against corrosion.
Product Overview
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Multi‑Leaf Design
Divided into multiple interlocking leaves for safer lifting, simplified handling, and flexible placement over larger openings. -
Material
GGG500/7 grade ductile iron per ISO 1083 ensures a high strength‑to‑weight ratio and superior impact resistance. -
Surface Finish
Standard bitumen coating (30 µm) offers excellent initial corrosion resistance; optional epoxy topcoat available for aggressive environments.
Technical Specifications
| Specification | Details |
|---|---|
| Clear Opening | 600 × 600 mm |
| External Frame | 672 × 672 × 100 mm (L×W×Depth) |
| Load Class | D400 (40 tonne / 400 kN test load) |
| Total Weight | Approx. 60 kg |
| Suspension System | Three‑point suspension for non‑rock stability |
| Top Pattern | Unique high‑USRV & PSRV design for slip resistance |
Quality & Compliance
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Standards
Fully manufactured and tested to BS EN 124‑2:2015 for Group 4 (D400) manhole covers and gully gratings. -
Certification
BSI Kitemark accreditation guarantees third‑party auditing, batch traceability, and conformity with UK/EU regulations. -
Material Conformance
Ductile iron composition meets ISO 1083 requirements, providing consistent tensile strength and elongation properties.
Applications & Benefits
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Heavy‑Traffic Areas
Designed for use in carriageways, hard shoulders, aprons, airport pavements, and industrial zones where 40 tonne load capacity is required. -
Ease of Maintenance
Multi‑leaf construction and ergonomic three‑point suspension enable rapid removal and replacement, minimizing operational downtime. -
Safety & Durability
Slip‑resistant patterned surface prevents accidents; robust ductile iron and protective coating ensure long‑term performance with low lifecycle costs.
| Family: | Telecom / Fibre / Cable |
| Packaging Qty: | 10 |
| Product Type: | Telecom Access Cover |
| Product Ranges: | TI Range |
| Certified Class: | D400 |
| Standards: | EN124 |
| Surface Finish: | Anti-slip surface |
| Clear Opening Length (Hinge Side): | 600 mm |
| Clear Opening Width: | 600 mm |
| Flange Outer Length: | 745 mm |
| Flange Outer Width: | 770 mm |
| Frame Height: | 100 mm |
| Weight: | 81 kg |
| Mass Per Unit Area: | 144 kg |
| Watertight: | No |
| Cover/Grating Shape: | Double Triangular |
| Cover/Grating Length: | 621 mm |
| Hatch Cover/Grating Qty: | 2 |
| Cover Security Block Angle: | 90 |
| Hinged: | Yes |
| Hinge Type: | TI |
| Lock Type: | 1/4 Turnbuckle |
| Number of Locking: | 1 |
| Opening Direction: | Vertical |
| Frame Style: | Monoblock as Cast |
| Frame Shape on Vertical Section: | Flat |
| Frame Surface Protection By: | Water-Based Paint |
| Nb Anchoring Hole: | 4 |
| Installation Type: | With Concrete |
| Diameter Anchoring hole: | 20 mm |
| Handling Key: | Hook Handle / 517082 |
| Locking Key: | CLE TI / 514260 |
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 |
