Platform Steel Grating 1.Bearing bar pitch:30,40,60mm 2.Cross bar pitch;50,100mm 3.Hot dip galvanized,Painted, untreat Platform ... ) or Stainless Steel.Surface Treatment: Hot dip galvanized , Painted , Untreated.Shape of bearing bars: Plain style , Serrated style , I section style ... .3, 40, 60, 80……Pitch of cross bars(mm)38.1, 50, 50.8, 70,75, 80, 100, 101.6, 102……