... or serrated 3.finish:black painted,mill,galvanized hot dipped galvanized steel grating 1.Material: SS302,SS304,SS316 ... 50, 100mm recommended. 5.Surface treatment: G - galvanized,P - painted,U - untreated6.Grating standard:1)China ... load-bearing capacity, non-slip and safe, easy installation, material-economic, sturdy and durable, ventilated, easy ... to contact with me hot dipped galvanized steel grating