manhole cover, trench cover, trench grating, trenc

Specs: according to all client’s drawings Packing: ply wooden pallet / case with plastic layer Paint: antirust bituminous painting It is widely used in industrial construction and road facilities. Type: rounded, quadrate, rectangular, double triangle, double seal Main products: manhole cover, gully grate, trench grating, surface box. paint: Bituminous paint Black packing: wooden pallet (normal) material: (ductile cast iron ) GGG50 Tensile strength: 500 Mpa Yield strees: 320 Mpa Elongation rate:7 % Hardness: HBS170 230 Standard EN124, UNIEN124, BSEN124 Anti-theft: Non-recycle, anti-theft naturally, the lock attachment can prevent tunnel products from losing, therefor city blackhole can be stopped totally.