... 1.bearing bar pitch:30-60mm 2.cross bar pitch:50-100mm 3.surface processing:galvanized1. brand: Qiangren2.Material:steel grating ... .5,15,25,30,40,60mm etcCross bar picth:38,50,76,100mmChina standard: G203/30/100,G203/40/100,G325 ... /30/100,G325/30/50,G325/40/50,etc. We also can according to your requirement to ...