Steel Grating 1.bearing bar pitch:30.40.60mm 2.cross ... 4.IS9001:2008 Hot Dipped Galvanized Steel Grating 1. Material: stainless steel plate, Low carbon steel sheet2. Surface treatment: untreated, painted, galvanized, powder coated3. Steel grating standard:A ... , building groove, covers, ladders, fences, guard rails and so on Hot dipped galvanized steel grating