... embedded type, wear locking type, wear welding type CHARACTERISTIC Steel grille have following characteristics: 1: high strength, light ... easy to disassembled and installed USES steel grating may be applied to platform, floor, walkway, stair treads, trestle, fending, drainage, ... A36, A1011, A569, Q235, S275JR, SS304, Mild steel & Low carbon steel, etc 5 Surface Treatment Black, self colour, hot ...