... such as light weight, high strength, great load cap Galvanized gully grating, sewer cover, samp covers have many advantages such as ... & Low carbon steel, etc 5Surface TreatmentBlack, self colour, hot dip galvanized, painted, spray coating (Mr. David Huang) 6Grating StylePlain / Smooth, ... Germany: DIN24537-1-2006, Japan: JIS (Mr. David Huang) galvanized gully grating, sewer cover, sump covers