Composite steel grating is bearing bar with cross bar in a certain distance arrangement,surface welding riffled plate form one kinds of steel grating products. Mainly used for the area where don't need daylighting, ventilated, dustproof, and falling protector . Its characteristic is that the surface has convex decorative pattern, have very good prevent slippery effect, carrying capacity is strong, not falling objects, etc. According to the different requirements choosing different bearing bar,The Picth generally use 40 mm, 60 mm, 100 mm and 150 mm etc. The Picth of cross bar normally use 100 mm ,200 mm 300 mm ,500 mm, etc. Usually the thickness of steel decorative pattern is 3 mm , 4 mm and 5 mm .Its defect is slightly deformation after hot-dipped galvanizing, not absolute level. Our composite steel grating product quality in the same industry is in absolutely leading level.