Bearing bar pitch:30,40,60mm Cross bar pitch;50,100mm Plain,Serrated,I-shape Hot-dipped galvanized,Painted,Untrea We produce three kinds of steel gratings, they are Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating. They are widely used in steel structure platforms, stair treads, sidewalks, drainages and well covers etc. We can design and manufacture standard ...