... .Plain,Serrated,I-shape 4.Hot-dipped galvanized,Painted, Hot dipped galvanized steel grating 1.Steel Grating is made by carbon or mild steel of certain sizes through the ... , A1011, A569, Q235, S275JR, SS304, Mild steel & Low carbon steel, etc5Surface TreatmentBlack, self colour, hot dip galvanized, painted, spray coating6Grating StylePlain / Smooth, Serrated /teeth ...