{"id":1741,"date":"2025-04-18T10:19:40","date_gmt":"2025-04-18T02:19:40","guid":{"rendered":"https:\/\/www.ductileironsuppliers.com\/?post_type=product&p=1741"},"modified":"2025-04-18T10:19:40","modified_gmt":"2025-04-18T02:19:40","slug":"d400-multileaf-manhole-cover-750x750mm-clear-opening","status":"publish","type":"product","link":"https:\/\/www.ductileironsuppliers.com\/ar\/product\/d400-multileaf-manhole-cover-750x750mm-clear-opening","title":{"rendered":"\u063a\u0637\u0627\u0621 \u0641\u062a\u062d\u0629 \u0641\u062a\u062d\u0629 \u0645\u062a\u0639\u062f\u062f\u0629 \u0627\u0644\u0623\u0648\u0631\u0627\u0642 D400 \u0645\u062a\u0639\u062f\u062f \u0627\u0644\u0623\u0648\u0631\u0627\u0642 \u0645\u0642\u0627\u0633 750\u00d7750 \u0645\u0645 \u0630\u0648 \u0641\u062a\u062d\u0629 \u0634\u0641\u0627\u0641\u0629"},"content":{"rendered":"

This D400 multileaf manhole cover combines a 750\u00a0\u00d7\u00a0750\u00a0mm clear opening<\/strong> with a 120\u00a0mm frame height<\/strong>, certified to BS EN 124:2015 Class D400 for 400 kN (40 tonne) wheel loads\u2014ideal for roads, car parks, and pedestrian zones. Its hinged, double\u2011triangular leaves<\/strong> pivot smoothly for one\u2011person access, while a three\u2011point suspension eliminates rocking under traffic. Engineered from high\u2011grade ductile iron with anti\u2011slip tread, optional locking, and pressure\u2011release features, it delivers decades of low\u2011maintenance reliability in demanding environments.<\/p>\n

Overview<\/h2>\n

Our D400 multileaf cover is manufactured from EN GJS\u2011500\u20117 spheroidal graphite cast iron, offering exceptional tensile strength and impact resistance for highway\u2011class installations. The 750 \u00d7 750 mm clear opening accommodates standard maintenance tools, while the 120 mm deep, drop\u2011in frame self\u2011aligns flush into a prepared recess to minimize installation time and ensure consistent seating.<\/p>\n

Key Features<\/h2>\n
    \n
  • \n

    Class\u00a0D400 Certification<\/strong>: Verified to BS EN 124:2015 Group 4, sustaining 400 kN (40 tonnes) of static and dynamic wheel loads.<\/p>\n<\/li>\n

  • \n

    Double\u2011Triangular Hinged Leaves<\/strong>: Two interlocking triangular sections pivot on a full\u2011length hinge for ergonomic, one\u2011person operation.<\/p>\n<\/li>\n

  • \n

    Three\u2011Point Non\u2011Rock Suspension<\/strong>: Prevents cover displacement and rattling under repeated traffic passages.<\/p>\n<\/li>\n

  • \n

    Anti\u2011Slip Tread Pattern<\/strong>: Raised chequered surface exceeds PSRV 70 standards to maintain traction in wet or oily conditions.<\/p>\n<\/li>\n

  • \n

    Optional Security Locking<\/strong>: Screw\u2011locking, cam\u2011bolt, or turnbuckle systems available to deter tampering and unauthorized access.<\/p>\n<\/li>\n

  • \n

    Pressure\u2011Release Holes<\/strong>: Allow air to escape during cover seating, preventing hydraulic locking and easing operation.<\/p>\n<\/li>\n

  • \n

    Custom Coatings & Badging<\/strong>: Bitumen or epoxy finishes, plus bespoke logos or numbering, support corporate branding and asset tracking.<\/p>\n<\/li>\n

  • \n

    Frame Depth Options<\/strong>: Standard 120 mm depth; adjustable from 100\u2013150 mm to suit installation requirements.<\/p>\n<\/li>\n<\/ul>\n

    Technical Specifications<\/h2>\n
    \n

     <\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Specification<\/th>\nDetails<\/th>\n<\/tr>\n<\/thead>\n
    Standard<\/strong><\/td>\nBS EN 124:2015 Class D400<\/td>\n<\/tr>\n
    Clear Opening<\/strong><\/td>\n750 \u00d7 750 mm<\/td>\n<\/tr>\n
    Frame Height<\/strong><\/td>\n120 mm (100\u2013150 mm options)<\/td>\n<\/tr>\n
    Overall Frame<\/strong><\/td>\n965 \u00d7 965 mm<\/td>\n<\/tr>\n
    Material<\/strong><\/td>\nDuctile iron (EN GJS\u2011500\u20117)<\/td>\n<\/tr>\n
    Load Capacity<\/strong><\/td>\n400 kN (40 tonnes)<\/td>\n<\/tr>\n
    Surface Finish<\/strong><\/td>\nBitumen (30 \u00b5m) or epoxy coating<\/td>\n<\/tr>\n
    Suspension<\/strong><\/td>\nThree\u2011point non\u2011rock<\/td>\n<\/tr>\n
    Access<\/strong><\/td>\nHinged, double\u2011triangular leaves<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    Benefits for End Users<\/h2>\n
      \n
    • \n

      Enhanced Safety<\/strong>: Anti\u2011rock suspension and locking options reduce cover movement and unauthorized opening, minimizing trip\u2011hazards and vandalism.<\/p>\n<\/li>\n

    • \n

      Operational Efficiency<\/strong>: Hinged design and pressure\u2011release holes speed up inspections and maintenance, cutting labor costs and downtime.<\/p>\n<\/li>\n

    • \n

      Long\u2011Term Durability<\/strong>: Ductile\u2011iron construction and robust coatings resist corrosion and deformation, promising over 30 years of service in harsh traffic environments.<\/p>\n<\/li>\n<\/ul>\n

      Installation & Maintenance<\/h2>\n

      Drop\u2011in installation requires minimal preparation: set the self\u2011aligning frame into a compacted bedding layer and secure, then close the cover to engage the latch automatically. Routine maintenance involves checking hinges, lubricating locking bolts, and clearing tread patterns\u2014tasks completed in minutes to limit operational disruption.<\/p>\n

      Compliance & Quality Assurance<\/h2>\n

      Produced in ISO 9001\u2011certified foundries and tested by UKAS\u2011accredited labs for load, slip, and fatigue performance. Fully compliant with Highways England CD 534 v0.1.0 (formerly HA 104\/09) and carries BSI Kitemark certification where applicable.<\/p>\n

      \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      Family<\/strong>:<\/td>\nTelecom \/ Fibre \/ Cable<\/td>\n<\/tr>\n
      Packaging Qty<\/strong>:<\/td>\n4<\/td>\n<\/tr>\n
      Product Type<\/strong>:<\/td>\nTelecom Access Cover<\/td>\n<\/tr>\n
      Certified Class<\/strong>:<\/td>\nD400<\/td>\n<\/tr>\n
      Surface Finish<\/strong>:<\/td>\nAnti-slip surface<\/td>\n<\/tr>\n
      Clear Opening Length (Hinge Side)<\/strong>:<\/td>\n750 mm<\/td>\n<\/tr>\n
      Clear Opening Width<\/strong>:<\/td>\n750 mm<\/td>\n<\/tr>\n
      Flange Outer Length<\/strong>:<\/td>\n910 mm<\/td>\n<\/tr>\n
      Flange Outer Width<\/strong>:<\/td>\n950 mm<\/td>\n<\/tr>\n
      Frame Height<\/strong>:<\/td>\n120 mm<\/td>\n<\/tr>\n
      Weight<\/strong>:<\/td>\n157 kg<\/td>\n<\/tr>\n
      Mass Per Unit Area<\/strong>:<\/td>\n171 kg<\/td>\n<\/tr>\n
      Watertight<\/strong>:<\/td>\nNo<\/td>\n<\/tr>\n
      Cover\/Grating Shape<\/strong>:<\/td>\nDouble Triangular<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
      \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      Cover\/Grating Length<\/strong>:<\/td>\n752 mm<\/td>\n<\/tr>\n
      Hatch Cover\/Grating Qty<\/strong>:<\/td>\n2<\/td>\n<\/tr>\n
      Cover Security Block Angle<\/strong>:<\/td>\n90<\/td>\n<\/tr>\n
      Hinged<\/strong>:<\/td>\nYes<\/td>\n<\/tr>\n
      Hinge Type<\/strong>:<\/td>\nFT<\/td>\n<\/tr>\n
      Number of Locking<\/strong>:<\/td>\n1<\/td>\n<\/tr>\n
      Opening Direction<\/strong>:<\/td>\nVertical<\/td>\n<\/tr>\n
      Frame Style<\/strong>:<\/td>\nMonoblock as Cast<\/td>\n<\/tr>\n
      Frame Shape on Vertical Section<\/strong>:<\/td>\nFlat<\/td>\n<\/tr>\n
      Frame Surface Protection By<\/strong>:<\/td>\nWater-Based Paint<\/td>\n<\/tr>\n
      Nb Anchoring Hole<\/strong>:<\/td>\n4<\/td>\n<\/tr>\n
      Installation Type<\/strong>:<\/td>\nWith Concrete<\/td>\n<\/tr>\n
      Installation On<\/strong>:<\/td>\nK1 Chamber<\/td>\n<\/tr>\n
      Diameter Anchoring hole<\/strong>:<\/td>\n20 mm<\/td>\n<\/tr>\n
      Handling Key<\/strong>:<\/td>\nHook Handle \/ 517082<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Ductile iron manhole cover specifications and parameters<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      Parameter<\/strong><\/th>\nSpecification\/Value<\/strong><\/th>\n<\/tr>\n<\/thead>\n
      Material<\/strong><\/td>\nDuctile Cast Iron (Grade 500-7)<\/td>\n<\/tr>\n
      Standard Compliance<\/strong><\/td>\nEN 124, BS 497, ASTM A536, ISO 1083<\/td>\n<\/tr>\n
      Shape<\/strong><\/td>\nRound, Square, Oval<\/td>\n<\/tr>\n
      Load Rating<\/strong><\/td>\nA15, B125, C250, D400, E600, F900 (EN 124 load classes)<\/td>\n<\/tr>\n
      Load Bearing Capacity<\/strong><\/td>\n1.5 – 90 tons (depending on the rating)<\/td>\n<\/tr>\n
      Size (Diameter\/Length)<\/strong><\/td>\n300mm – 1500mm (depending on type and design)<\/td>\n<\/tr>\n
      Thickness of Lid<\/strong><\/td>\n20mm – 60mm (depending on the load class)<\/td>\n<\/tr>\n
      Weight<\/strong><\/td>\n10 kg to 150 kg (depending on size and class)<\/td>\n<\/tr>\n
      Cover Surface<\/strong><\/td>\nSmooth, Anti-slip, Textured for grip<\/td>\n<\/tr>\n
      Corrosion Resistance<\/strong><\/td>\nExcellent, with epoxy coatings or bituminous treatment<\/td>\n<\/tr>\n
      Gasket Type<\/strong><\/td>\nRubber, Neoprene, EPDM<\/td>\n<\/tr>\n
      Sealing Mechanism<\/strong><\/td>\nBolt-down, Locking system, Hinged<\/td>\n<\/tr>\n
      Drainage Holes<\/strong><\/td>\nYes, optional (for water drainage)<\/td>\n<\/tr>\n
      Coating Type<\/strong><\/td>\nBitumen coated, Epoxy coating, Hot-dip galvanizing<\/td>\n<\/tr>\n
      Temperature Resistance<\/strong><\/td>\n-30\u00b0C to +150\u00b0C (depending on coating type)<\/td>\n<\/tr>\n
      Fire Resistance<\/strong><\/td>\nFlame-retardant (meets local standards for fire resistance)<\/td>\n<\/tr>\n
      Noise Level<\/td>\nLow noise design for urban areas<\/td>\n<\/tr>\n
      Ventilation<\/strong><\/td>\nOptional vented covers for gas or sewage systems<\/td>\n<\/tr>\n
      Color<\/strong><\/td>\nBlack, Gray, Custom colors available<\/td>\n<\/tr>\n
      Manufacturing Process<\/strong><\/td>\nSand casting, Lost wax casting, Centrifugal casting<\/td>\n<\/tr>\n
      Edge Type<\/strong><\/td>\nFlat, Raised, Beveled, or Reinforced edges<\/td>\n<\/tr>\n
      Bearing Surface<\/strong><\/td>\nCast iron, Epoxy, Stainless Steel (optional)<\/td>\n<\/tr>\n
      Longevity<\/strong><\/td>\n50+ years with proper maintenance<\/td>\n<\/tr>\n
      Environmental Compliance<\/strong><\/td>\nRoHS, REACH, and other regional environmental standards<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"featured_media":1742,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"tags":[],"products":[9],"class_list":["post-1741","product","type-product","status-publish","has-post-thumbnail","hentry","products-ductile-iron-manhole-cover"],"acf":[],"yoast_head":"\nD400 Multileaf Manhole Cover 750\u00d7750mm Clear Opening Hinged Double\u2011Triangular Design - Jingang LuoKaiwei<\/title>\n<meta name=\"description\" content=\"Shop our BS\u00a0EN\u00a0124:2015 Class\u00a0D400 multileaf manhole cover with 750\u00d7750\u00a0mm opening and 120\u00a0mm frame height. Hinged double\u2011triangular leaves, anti\u2011rock suspension, and optional locking deliver safe, low\u2011maintenance access for trafficked areas.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ductileironsuppliers.com\/ar\/product\/d400-multileaf-manhole-cover-750x750mm-clear-opening\/\" \/>\n<meta property=\"og:locale\" content=\"ar_AR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D400 Multileaf Manhole Cover 750\u00d7750mm Clear Opening Hinged Double\u2011Triangular Design - Jingang LuoKaiwei\" \/>\n<meta property=\"og:description\" content=\"Shop our BS\u00a0EN\u00a0124:2015 Class\u00a0D400 multileaf manhole cover with 750\u00d7750\u00a0mm opening and 120\u00a0mm frame height. 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