1.stainless steel grating 2.Metal grating 3.ASTM A123,SS400 4.Common ... Bar Pitch12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, ... Cross Bar Pitch38.1, 40,50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc 4Material ... , A1011, A569, Q235, S275JR, SS304, Mild steel & Low carbon steel, etc5Surface TreatmentBlack, self colour, hot dip galvanized, ... YB/T 4001.1-2007, Stainless steel grating