... pitch;50,100mm 3Plain,Serrated,I-shape 4Hot-dipped galvanized,Painted,Untrea Galvanized steel grating Steel grating standards:A. China: ... made from copper, aluminum and other materials. However, galvanized steel grating is the widely used for its economical cost ... Steel grating offers the following advantages compared with steel grid sheets:Steel grating has light weight, good strength, large carrying ...