Roofing Sheet, Galvanized Steel, Galvalume Steel manufacturer / supplier in China, offering 38mm*38mm*1.8mm*6m Galvanized Square Steel (PIPE) , Used in a Variety of Applications Such as Steel Beam Structures, Roofing Sheets, Steel Pipes, Nuts, Bolts, Galvanized Rectangular Steel Pipe, Dx51d Dx52D Dx53D Z30-Z275g Galvanized Steel Coil and so on.