\nHeavy\u2011Duty Construction<\/strong>: Manufactured from GGG500\/7-grade ductile iron, providing superior tensile strength and impact resistance.<\/p>\n<\/li>\n\nSquare Frame Design<\/strong>: The square frame provides easy alignment during installation, ensuring that the cover sits securely in place, while maintaining structural integrity.<\/p>\n<\/li>\n\nD400 Load Rating<\/strong>: Rated to withstand up to 400\u202fkN (40\u202ftonnes), this cover is perfect for roads, highways, and any area exposed to heavy vehicular traffic.<\/p>\n<\/li>\n<\/ul>\nKey Specifications<\/h3>\n\n
<\/p>\n
\n
\n\n\n| Specification<\/th>\n | Details<\/th>\n<\/tr>\n<\/thead>\n |
\n\nClear Opening<\/strong><\/td>\n| \u00d8600\u202fmm<\/td>\n<\/tr>\n | \nFrame Type<\/strong><\/td>\n| Square Frame Design<\/td>\n<\/tr>\n | \nLoad Rating<\/strong><\/td>\n| D400 (400\u202fkN \/ 40\u202ft)<\/td>\n<\/tr>\n | \nMaterial<\/strong><\/td>\n| GGG500\/7 Ductile Iron (ISO\u202f1083)<\/td>\n<\/tr>\n | \nFrame Size<\/strong><\/td>\n| 750\u202f\u00d7\u202f750\u202f\u00d7\u202f100\u202fmm (approx.)<\/td>\n<\/tr>\n | \nCoating<\/strong><\/td>\n| 30\u202f\u00b5m bitumen (standard); epoxy finish optional<\/td>\n<\/tr>\n | \nLifting Mechanism<\/strong><\/td>\n| Three\u2011point suspension system for easy handling<\/td>\n<\/tr>\n | \nSurface Pattern<\/strong><\/td>\nAnti-slip surface for pedestrian safety<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\nTechnical Features<\/h3>\n\n- \n
Ductile Iron Composition<\/strong>: Cast from high-quality GGG500\/7 ductile iron, this cover ensures exceptional strength, fatigue resistance, and longevity even under repeated heavy loads.<\/p>\n<\/li>\n- \n
Flush Fit and Stability<\/strong>: A precision-machined three\u2011point suspension system ensures that the cover remains securely in place, reducing the risk of shifting, rattling, or lifting over time.<\/p>\n<\/li>\n- \n
Corrosion Resistance<\/strong>: The bitumen or optional epoxy coating protects the cover from environmental wear, ensuring it remains functional and safe even in coastal or chemically aggressive environments.<\/p>\n<\/li>\n<\/ul>\nQuality & Compliance<\/h3>\n\n- \n
BS EN\u202f124:2015 Compliance<\/strong>: Designed to meet D400 load class standards for manhole covers and gratings, suitable for roads and heavy-traffic areas.<\/p>\n<\/li>\n- \n
ISO 9001 Certified<\/strong>: Manufactured in compliance with ISO 9001 quality management standards to ensure consistent product quality.<\/p>\n<\/li>\n- \n
Certified Performance<\/strong>: Third-party testing guarantees the cover\u2019s capacity to withstand 400\u202fkN (40\u202ftonnes) of load and meet safety standards for high\u2011traffic public spaces.<\/p>\n<\/li>\n<\/ul>\nApplications & Benefits<\/h3>\n\n- \n
Ideal for High-Traffic Zones<\/strong>: Perfect for highways, industrial areas, city streets, and parking lots where heavy vehicles routinely pass.<\/p>\n<\/li>\n- \n
Increased Safety<\/strong>: The anti-slip surface reduces the risk of accidents or injuries in pedestrian areas, ensuring compliance with safety regulations.<\/p>\n<\/li>\n- \n
Reduced Maintenance Costs<\/strong>: The durability of the GGG500\/7 ductile iron combined with protective coatings ensures a long lifespan and reduces the frequency of replacements.<\/p>\n<\/li>\n- \n
Efficient Installation<\/strong>: The square frame design facilitates quick and easy installation, reducing labor costs and traffic disruptions during maintenance.<\/p>\n<\/li>\n<\/ul>\n\n \n\n\nFamily<\/strong>:<\/td>\n| Municipal<\/td>\n<\/tr>\n | \nPackaging Qty<\/strong>:<\/td>\n| 10<\/td>\n<\/tr>\n | \nProduct Type<\/strong>:<\/td>\n| Access Covers<\/td>\n<\/tr>\n | \nProduct Ranges<\/strong>:<\/td>\n| TWINO Range<\/td>\n<\/tr>\n | \nCertified Class<\/strong>:<\/td>\n| D400<\/td>\n<\/tr>\n | \nSurface Finish<\/strong>:<\/td>\n| Anti-slip surface<\/td>\n<\/tr>\n | \nClear Opening<\/strong>:<\/td>\n| 600 mm<\/td>\n<\/tr>\n | \nFlange Outer Length<\/strong>:<\/td>\n850 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n\n \n\n\nFlange Outer Width<\/strong>:<\/td>\n| 850 mm<\/td>\n<\/tr>\n | \nFrame Height<\/strong>:<\/td>\n| 100 mm<\/td>\n<\/tr>\n | \nWeight<\/strong>:<\/td>\n| 59 kg<\/td>\n<\/tr>\n | \nWatertight<\/strong>:<\/td>\n| No<\/td>\n<\/tr>\n | \nCover Diameter<\/strong>:<\/td>\n| 650 mm<\/td>\n<\/tr>\n | \nHinged<\/strong>:<\/td>\n| Yes<\/td>\n<\/tr>\n | \nHandling Key<\/strong>:<\/td>\n| Hook Handle \/ 517082<\/td>\n<\/tr>\n | \nLocking Key<\/strong>:<\/td>\nN\/A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\nDuctile iron manhole cover specifications and parameters<\/h3>\n\n\n\nParameter<\/strong><\/th>\nSpecification\/Value<\/strong><\/th>\n<\/tr>\n<\/thead>\n\n\nMaterial<\/strong><\/td>\n| Ductile Cast Iron (Grade 500-7)<\/td>\n<\/tr>\n | \nStandard Compliance<\/strong><\/td>\n| EN 124, BS 497, ASTM A536, ISO 1083<\/td>\n<\/tr>\n | \nShape<\/strong><\/td>\n| Round, Square, Oval<\/td>\n<\/tr>\n | \nLoad Rating<\/strong><\/td>\n| A15, B125, C250, D400, E600, F900 (EN 124 load classes)<\/td>\n<\/tr>\n | \nLoad Bearing Capacity<\/strong><\/td>\n| 1.5 – 90 tons (depending on the rating)<\/td>\n<\/tr>\n | \nSize (Diameter\/Length)<\/strong><\/td>\n| 300mm – 1500mm (depending on type and design)<\/td>\n<\/tr>\n | \nThickness of Lid<\/strong><\/td>\n| 20mm – 60mm (depending on the load class)<\/td>\n<\/tr>\n | \nWeight<\/strong><\/td>\n| 10 kg to 150 kg (depending on size and class)<\/td>\n<\/tr>\n | \nCover Surface<\/strong><\/td>\n| Smooth, Anti-slip, Textured for grip<\/td>\n<\/tr>\n | \nCorrosion Resistance<\/strong><\/td>\n| Excellent, with epoxy coatings or bituminous treatment<\/td>\n<\/tr>\n | \nGasket Type<\/strong><\/td>\n| Rubber, Neoprene, EPDM<\/td>\n<\/tr>\n | \nSealing Mechanism<\/strong><\/td>\n| Bolt-down, Locking system, Hinged<\/td>\n<\/tr>\n | \nDrainage Holes<\/strong><\/td>\n| Yes, optional (for water drainage)<\/td>\n<\/tr>\n | \nCoating Type<\/strong><\/td>\n| Bitumen coated, Epoxy coating, Hot-dip galvanizing<\/td>\n<\/tr>\n | \nTemperature Resistance<\/strong><\/td>\n| -30\u00b0C to +150\u00b0C (depending on coating type)<\/td>\n<\/tr>\n | \nFire Resistance<\/strong><\/td>\n| Flame-retardant (meets local standards for fire resistance)<\/td>\n<\/tr>\n | \n| Noise Level<\/td>\n | Low noise design for urban areas<\/td>\n<\/tr>\n | \nVentilation<\/strong><\/td>\n| Optional vented covers for gas or sewage systems<\/td>\n<\/tr>\n | \nColor<\/strong><\/td>\n| Black, Gray, Custom colors available<\/td>\n<\/tr>\n | \nManufacturing Process<\/strong><\/td>\n| Sand casting, Lost wax casting, Centrifugal casting<\/td>\n<\/tr>\n | \nEdge Type<\/strong><\/td>\n| Flat, Raised, Beveled, or Reinforced edges<\/td>\n<\/tr>\n | \nBearing Surface<\/strong><\/td>\n| Cast iron, Epoxy, Stainless Steel (optional)<\/td>\n<\/tr>\n | \nLongevity<\/strong><\/td>\n| 50+ years with proper maintenance<\/td>\n<\/tr>\n | \nEnvironmental Compliance<\/strong><\/td>\n| RoHS, REACH, and other regional environmental 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