Hot dip Galvanized Steel Grating 1.Bearing bar pitch:30,40, ... 3.Plain,Serrated,I-shape 4ISO9001 Hot dip Galvanized Steel Gratinggalvanized steel grating is the most widely used.We have ... form of a plain surface flat bar, commonly used for platforms, trenchgratings, and stair treads.Standard Description: NoItemDescription1Bearing ... )UK: BS4592-1987Australia: AS1657-1985 Hot dip Galvanized Steel Grating