galvanized gully grating, sewer cover, sump covers has many advantages such as light weight, high strength, great ... load cap Galvanized gully grating, sewer cover, samp covers have many advantages such as light weight, high strength, great ... A36, A1011, A569, Q235, S275JR, SS304, SS400, Mild steel & Low carbon steel, etc 5Surface TreatmentBlack, self colour, hot dip galvanized, painted ...