The F900 double triangular manhole cover, with a 750 × 750 mm clear opening, is engineered for the most demanding applications where extreme wheel loads of up to 900 kN (90 tonnes) are expected. Certified to meet BS EN 124:2015 standards, this robust cover design is ideal for use in highways, industrial zones, and ports, where high traffic volumes, heavy vehicles, and frequent stress cycles are common. The double triangular pattern not only enhances structural integrity but also facilitates a more secure grip during installation and maintenance.
Crafted from GGG500/7 ductile iron, a material known for its excellent fatigue resistance and high tensile strength, the cover ensures reliable, long-term performance under rigorous conditions. The integrated lifting system, along with precision-machined edges, guarantees ease of handling while maintaining a tight, non-rock fit during use. A corrosion-resistant coating, usually in bitumen or epoxy finish, extends the service life of the manhole cover, making it ideal for harsh environmental conditions such as coastal areas or industrial sites with exposure to chemicals.
Product Overview
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Durable Construction: Made from high-strength GGG500/7 ductile iron (ISO 1083), the cover resists impact, fatigue, and corrosion, ensuring long-lasting performance.
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Double Triangular Pattern: The unique double triangular shape optimizes weight distribution, increasing the overall structural strength while facilitating easy lifting and maneuvering.
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F900 Load Rating: Designed to withstand an impressive 900 kN load, this cover is perfect for areas with heavy truck traffic, such as highways, ports, and loading docks.
Key Specifications
Specification | Details |
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Clear Opening | 750 × 750 mm |
Cover Type | Double Triangular Design |
Load Class | F900 (900 kN / 90 t) |
Material | GGG500/7 Ductile Iron (ISO 1083) |
Frame Size | Approx. 850 × 850 × 100 mm |
Coating | 30 µm bitumen (standard); epoxy coating optional |
Lifting Mechanism | Integrated lifting points for easy handling |
Surface Pattern | Triangular grid design for improved grip and safety |
Technical Features
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High Load Capacity: Rated for 900 kN, capable of handling traffic from the heaviest commercial vehicles and construction machinery.
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Corrosion Resistance: Protective coatings prevent rust and degradation in coastal or industrial settings, reducing maintenance needs.
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Three‑Point Suspension: Ensures a stable, flush fit to minimize shifting and rattling, even under heavy traffic.
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Slip-Resistant Surface: The triangular pattern offers superior grip for pedestrians, improving safety on the job.
Quality & Compliance
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Compliance: Meets BS EN 124:2015 F900 standards for access covers and gratings, ensuring it meets the strictest industry requirements for vehicular access and load-bearing capacity.
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Material Standards: Manufactured from GGG500/7 ductile iron, which exceeds the strength and impact resistance of regular cast iron, providing superior long-term performance.
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Certified Performance: Third-party certification and testing to guarantee compliance with ISO 9001 standards, ensuring quality control and product reliability.
Applications & Benefits
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Heavy-Duty Traffic Areas: Ideal for highways, freight terminals, docks, airports, and other areas subjected to heavy commercial vehicle traffic.
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Security & Longevity: The integrated locking system (optional) ensures secure access, while the protective coatings prevent corrosion and wear in aggressive environments.
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Reduced Maintenance: Ductile iron construction and a slip-resistant surface reduce the need for frequent inspections and replacements, saving on long-term operational costs.
Family: | Telecom / Fibre / Cable |
Packaging Qty: | 5 |
Product Type: | Telecom Access Cover |
Product Ranges: | DT Range |
Certified Class: | F900 |
Standards: | EN124 |
Surface Finish: | Anti-slip surface |
Clear Opening Length (Hinge Side): | 750 mm |
Clear Opening Width: | 750 mm |
Flange Outer Length: | 910 mm |
Flange Outer Width: | 950 mm |
Frame Height: | 120 mm |
Weight: | 192 kg |
Watertight: | No |
Cover/Grating Shape: | Double Triangular |
Cover/Grating Length: | 752 mm |
Hatch Cover/Grating Qty: | 2 |
Cover Security Block Angle: | 90 |
Hinged: | Yes |
Hinge Type: | Ergo Hinge |
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 |
Installation Type: | With Concrete |
Installation On: | K1 Chamber |
Handling Key: | Hook Handle / 517082 |
Locking Key: | CLE TI / 514260 |
Ductile iron manhole cover specifications and parameters
Parameter | Specification/Value |
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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 |