This 600 × 600 mm double‑triangular manhole cover and frame is cast from GGG500/7‑grade ductile iron per ISO 1083 to deliver Class D400 (400 kN) load performance for heavy‑traffic applications, fully compliant with BS EN 124‑2:2015 and Highways England CD 534 specifications for assured durability and safety. Its precision‑engineered, two‑leaf triangular design incorporates three‑point suspension for rock‑free stability under load and simplified handling during installation and maintenance. The cover provides a 600 × 600 mm clear opening within a robust 746 × 746 × 100 mm frame (depth), ensuring optimal load transfer to the surrounding pavement. A standard 30 µm black bitumen coating protects against corrosion, with an optional epoxy finish available for more aggressive or coastal environments.
Product Overview
Design & Construction
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Double‑Triangular Leaves: Two interlocking triangles distribute loads evenly and reduce individual lifting effort, while precision machining of seating surfaces guarantees a flush, non‑rock fit between cover and frame.
Material
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Ductile Iron: Manufactured from spheroidal graphite cast iron (GGG500/7) in accordance with ISO 1083, offering superior tensile strength and impact resistance under cyclic loading.
Finish
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Protective Coating: Standard 30 µm bitumen finish for initial corrosion resistance; optional epoxy topcoat available for environments with heightened chemical or salt exposure.
Technical Specifications
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Clear Opening: 600 × 600 mm.
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Frame Dimensions: 746 × 746 × 100 mm (L × W × Depth).
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Load Class: D400 (400 kN / 40 t).
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Suspension: Three‑point system ensures non‑rock stability during live loads.
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Top Pattern: Double triangular grid enhances slip resistance under foot and wheel traffic.
Quality & Certification
Each cover‑frame assembly is load‑tested and certified to BS EN 124‑2:2015 and Highways England CD 534 standards, ensuring full compliance with national safety and performance requirements. Manufactured under ISO 9001 quality management systems, units undergo batch traceability and rigorous third‑party audits for consistent quality assurance.
Applications & Benefits
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Heavy‑Traffic Zones: Engineered for carriageways, highways, airports, and industrial estates where 40 t load capacity is mandatory.
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Efficient Maintenance: Double‑leaf design and three‑point suspension reduce lifting weights and accelerate service access, minimizing downtime and labor costs.
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Reduced Lifecycle Costs: Corrosion‑resistant coatings and durable ductile iron composition lower cleaning and replacement intervals.
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Enhanced Safety: Slip‑resistant double‑triangular top and flush seating eliminate trip hazards and cover noise under dynamic loads.
| Family: | Municipal |
| Brand: | Cavanagh |
| Packaging Qty: | 5 |
| Product Type: | Access Covers |
| Product Ranges: | SCORPION 150 |
| Certified Class: | E600 |
| Standards: | EN124 |
| Surface Finish: | ANTI-SLIP OTHER SURFACE |
| Clear Opening: | 600 mm |
| Clear Opening Length (Hinge Side): | 600 mm |
| Clear Opening Width: | 600 mm |
| Flange Outer Length: | 830 mm |
| Flange Outer Width: | 830 mm |
| Frame Height: | 150 mm |
| Weight: | 122 kg |
| Watertight: | No |
| Cover/Grating Shape: | Double Triangular |
| Cover/Grating Length: | 615 mm |
| Hatch Cover/Grating Qty: | 2 |
| Hinged: | No |
| Opening Direction: | Vertical |
| Frame Style: | Monoblock as Cast |
| Frame Shape on Vertical Section: | Flat |
| Frame Surface Protection By: | Water-Based Paint |
| Nb Anchoring Hole: | 8 |
| Installation Type: | To Concrete Pre Cast |
| Installation On: | Concrete Clear Dia 650mm Maxi |
| Diameter Anchoring hole: | 22 mm |
| Handling Key: | LARGE BS LIFTING KEY / 710059 |
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 |
