... customers in USA Houston, Ohio, Charttle, LA, MiddleEast, AUS, Europe and Southeast so on. grating UsageThe mild steel flooring grating is ... commonly used on bridge,refinery ,power plant,Sewage treatment plant and so on. No.ItemDescription1Bearing Bar25x3, 25x4, 25x4.5, 25x5, 30x3 ... Cross Bar Pitch38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc 4Material GradeASTM A36, A1011, A569, Q235, S275JR ...