Galvanized steel grating 1.Mild steel,stainless steel 2.Plain,Serrated,I-shape 3.Galvanized, stainless steel,untreated Galvanized steel grating: 1)Material: There are mill steel black, hot ... and so on.3)Types: Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating.4)Surface Treatment: Untreated, Painting ,Powder coated ...