... Serrated,I-bar mild steel grating galvanized steel grating floor grating ProductsManufacturing Process Main Market85% of mild steel flooring grating are ... worldwide with perfect quality. There are many regular mild steel flooring grating customers in USA Houston, Ohio, ... A36, A1011, A569, Q235, S275JR, SS304, Mild steel & Low carbon steel, etc5Surface TreatmentBlack, self colour, hot dip galvanized, ...