Indus Industrial Group supplies heavy-duty Class D400 Heavy Highway Ductile Iron Manhole Covers and Frames engineered across standard clear opening dimensions of 600mm, 700mm, and 800mm (round and square frames) with a certified test load of 400 kN (40 metric tons) according to EN 124-2:2015 standards. Manufactured from high-grade spheroidal graphite ductile iron (EN-GJS-500-7), these covers feature an integrated EPDM/polyurethane anti-rattle silencing gasket, 100-degree safety inspection hinge, 90-degree automatic anti-slam locking block, and anti-theft mechanical locks. Designed for carriageways of major highways, municipal arterial avenues, and heavy transport ports across Iraq.
| Pricing Verification | Commercial Quote on Demand (RFQ) |
| Governing Standards | EN 124-1/2:2015 / ISO 1083 / BS 5834 / CE Marked |
| Load Classification | Class D400 (400 kN / 40 Metric Tons Proof Load) |
| Clear Opening Sizes | 600 mm (24"), 700 mm (28"), 800 mm (32") Diameter |
| Frame Formats | Circular Flange / Square Flange with Expanded Mortar Key Bed |
| Material Grade | Ductile Iron EN-GJS-500-7 (Tensile Strength ≥ 500 MPa, Elongation ≥ 7%) |
| Anti-Rattle Cushion | Continuous EPDM / Polyurethane Gasket in Dovetail Channel |
| Hinge Mechanism | Captive Hinge 100° opening with 90° Safety Detent Anti-Slam Stop |
| Security Locking | Quarter-Turn Stainless Steel Locking Bolts / Padlockable Hasp Option |
| Surface Coating | Heavy Bituminous Paint / Water-Based Environmental Black Epoxy |
| Skid Resistance | Raised Anti-Slip Skid Pattern (PSR value ≥ 45) |
| Sector & Division | Water & Wastewater (Div 01) |
| Parent Category | Ductile Iron Manhole Covers |
Major highway carriageways (Highway 1 Baghdad-Basra), municipal urban arterial roads, port container terminal roadways, industrial park logistics corridors, and municipal wastewater trunk chambers across Baghdad, Erbil, Basra, Mosul, Najaf, and Karbala.
Class D400 Heavy Highway Ductile Iron Manhole Covers and Frames represent the definitive infrastructure standard for carriageways, arterial highways, and municipal street networks across Federal Iraq and the Kurdistan Region. Governed by EN 124-2:2015 and ISO 1083 standards, Class D400 covers are engineered to withstand a verified proof test load of 400 kN (40 metric tons), providing complete structural safety beneath the heaviest multi-axle commercial transport trucks, military vehicles, and fuel tankers operating on the Baghdad-Basra Highway 1 and urban ring roads.
Unlike brittle traditional grey cast iron covers that shatter under high-velocity traffic impacts, ductile iron (EN-GJS-500-7) provides high tensile strength (≥500 MPa) and exceptional elongation (≥7%), completely eliminating catastrophic brittle fractures. The frame incorporates an engineered continuous EPDM or neoprene elastomeric silencing gasket seated in a machined dovetail groove, which absorbs dynamic traffic vibrations, completely eliminates road clatter and noise pollution in residential areas, and prevents cover-to-frame metal wear.
User safety and municipal asset security are enhanced by an integrated 100° opening safety hinge with a mechanical anti-slam lock at 90° that prevents accidental cover closure on maintenance personnel working inside deep sewer chambers. Mechanical anti-theft locking bolts require dedicated municipal lifting keys, preventing cover theft. Finished in bitumen or electrostatic black epoxy paint, Indus D400 manhole assemblies are stocked in massive quantities at our Erbil Heavy Yard, Baghdad Central Depot, and Basra Port Corridor with certified third-party EN 124 inspection reports.
Grey cast iron is brittle; when heavy, fast-moving trucks strike a loose cover, it easily fractures, causing deadly road hazards and vehicle damage. Ductile iron contains spheroidal graphite that gives it steel-like impact toughness and tensile strength, making it shatterproof under 40-ton highway wheel loads.
The cover rests on a continuous elastomeric EPDM gasket seated in a machined channel in the frame. The rubber absorbs dynamic vehicle shocks, preventing metal-to-metal impact, stopping traffic rattling noises, and eliminating wear between the cover and frame contact faces.
Indus maintains high-volume stocks of 600mm round and square frames, 700mm circular frames, and 800mm heavy inspection covers at our Erbil, Baghdad, and Basra staging yards for immediate delivery to road paving contractors.
