... 1987,AS1657-1985 2.Types: Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating.3.Surface Treatment: Untreated, Painting , ... wire mesh. Our main product is steel grating, wire mesh fence, stainless steel wire mesh , welded wire mesh, hexagonal wire netting , ... you to choose 2)HOT!hot dip galvanized steel grating/floor grating/steel bar grating (10 years manufacturer)