steel grating bar 1.Bearing bar pitch:30,40,60mm 2.Cross bar pitch:50,100mm 3.Plain,Serrated,I-shape 4.Hot- ... ,thin low carbon steel plate,stainless steel plate,AL-Mg alloy plate,copper plate,nickel plate.specificationProductGrateGrateLoad BarsEdge BarCross BarCodeWidth mmLength ... @ 40mm c/c50 x 56mm @ 100 c/c steel grating bar