... bar:50,100mm Plain,Serrated,I-shape Hot-dipped galv,Painted Steel Grating1>Bearing bar pitch:30,40,60mm 2>Cross bar ... >Plain,Serrated,I-shape 4>Hot-dipped galvanized,Painted,Untrea1) material:carbon steel or stainless steel 2) cross bar pitches:maybe 24-200mm ... ,of which 50mm,76mm and 100mm are recommended. 3) Steel grating is made by the world first-class equipment,which ...