D400 1200X1350mm round manhole cover

D400 1200×1350 mm Heavy-Duty Ductile Iron Round Manhole Cover Designed for heavy load conditions, this D400-rated round ductile iron manhole cover with a 1200×1350 mm frame size offers optimal strength, safety, and durability. It is ideal for highways, transportation terminals, and heavy traffic zones. Product Specifications Standard EN 124 Class D400 Cover Shape Round cover Frame Size 1200mm × 1350mm Clear Opening Typically 1000–1100mm (customizable) Material Ductile Iron (QT500-7) Load Capacity Up to 40 tonnes Surface Finish Anti-slip pattern Coating Bitumen black or epoxy paint Brand HXW Model D400 1200×1350mm   Chongzhou Hongxinwei Metal Manufacturing Co., Ltd. With over 30 years of foundry experience, we provide OEM and customized ductile iron solutions for infrastructure projects worldwide.  Contact us for technical drawings, pricing, or a tailored solution to your specifications.