1>Bearing bar pitch:30,40,60mm 2>Cross bar pitch;50,100mm 3>Plain,Serrated,I-shape 4>Hot-dipped galvanized,Painted,Untreat Welded Grating1.Brand:Wangyuan (steel grating) 2.Material: steel grating is made of low carbon steel plate,stainless steel plate,flat steel plate,etc3.Technique: steel grating is made by pressing and welding,surface treatment should be untreated,painted or hot dipped4. ...