... of light, easily to be cleaned, beautiful in appearance. Application:Widely used in electricity, petrochemical, chemical industry, metallurgy, machines, ... cover and so on.Our product of steel grating products is in compliance with the People's Republic ... GradeASTM A36, A1011, A569, Q235, S275JR, SS304, Mild steel & Low carbon steel, etc5Surface TreatmentBlack, self color, hot dip galvanized, painted, ...