... such as light weight, high strength, great load cap Galvanized gully grating, sewer cover, samp covers have many advantages such as light ... , being sturdy and durable.Ningbo Lihong Steel Grating Co., Ltd ISO9001-2008STEEL GRATING SPECIALIST, YOUR GRATING SOLUTIONSSales Director: Mr. David Huang, TEL: ... : DIN24537-1-2006, Japan: JIS (Mr. David Huang) galvanized gully grating, sewer cover, sump covers