... specialized in manufacture and exports all kinds of steel gratings with the best quality, competitive price and ... dip Galvanizing and stainless grating flooring walkway, platform and steel structures, stair tread, well cover, trench cover, compound gratings, storage ... , A1011, A569, Q235, S275JR, SS304, Mild steel & Low carbon steel, etc5Surface TreatmentBlack, self colour, hot dip galvanized, painted ...