500*600d400metal Building Materials 400kN High Pressure Customized Ductile Iron Manhole Cover FRP Manhole Cover Manhole Cover with Certificate Cast Iron Grate

500*600d400metal Building Materials 400kN High Pressure Customized Ductile Iron Manhole Cover FRP Manhole Cover Manhole Cover with Certificate Cast Iron Grate. Comprehensive Warranty: 5-year warranty coverage for all mechanical defects and performance issues. Anti-Theft Design: Integrated anti-theft camera box and folding plate mechanism eliminates rust and theft risks. Anti-Slip Surface: Diamond block pattern cast on surface ensures high wear resistance and safety. Customizable Dimensions: Available in A15 to F900 load capacities with fully customized size options. Multi-Color Options: Standard colors include Green, Yellow, and Black with custom color requests accepted. OEM/ODM Service: Full OEM and ODM capabilities available for logo and design customization. Anti-Displacement Fixing: Anchor bolts secure the ring to the ground, preventing misalignment during construction. Durable Material: Constructed from Resin, Fiberglass, and BMC for long-lasting anti-rust performance.