... Galvanzied Use:platform,ladders,floor drain,floor drain ISO9001 Steel Grating For Floor Drain Material:steel grating is made ... S275JR, SS304, Mild steel & Low carbon steel, etc5Surface TreatmentBlack, self colour, hot dip galvanized, painted, spray coating 6Grating StylePlain / ... , helps column, channel pedal, railway, high CeDao floor drain cap, platform scale, covers the grille, stereo, road parking ...