Steel Grating It is steel bar according to a certain distance and cross arranged and welded into the middle of a square latice with an iron and steel products . bearing bar 25/3mm , 25mm/4mm , 25mm/5mm , 30/3mm , 30/5mm,32/3mm,32/5mm ,40/3mm75/5mm,100/10mm opening 30mm x 32mm , 30mm x 60mm, 30mm x 100mm , 38mm x 100mm , 40mm x 100mm , 50mm x 50mm ,50mm x 100mm etc surface treatment black , hot dip galvanized type plain bar, serrated bar , I shape bar Hot dip galvanized steel grating tolerance The allowed deviation of length is +0/-5mm, while the allowed deviation of width is +/-5 mm. The non-perpendicularity of bearing bar is allowed no more than 10% of width of bearing bar. Cross bar surface should not surpass bearing bar surface 1mm, beginning & end of cross bar should not surpass the end surfaces of two sides of grating 2mm. Features Corrosion resistance, Rust resistance. Anti-slip resistance, Good air circulation. Good drainage performance, Easy to install and uninstall. High strength-to-weight performance,Durable and long lifespan. Applications Steel grating is widely used for work platforms. Catwalks, transportation servicing areas and vehicle steps.