... :1m-3m Steel Grating1. Bearing bar specification: 25 x 3 to 60 x 62. Bearing bar pitch: 12.5,15,25 ... and 50,100mm are recommended.4.Type of bearing bar:plain style5. Material: stianless steel and carbon steel ... ) Australia: AS1657-1985Grating DimensionBearing bar pitch(mm)12.5, 15,25, 30, 30.16, 32.5, 34, 40, 41 ... .25, 45, 50, 60, 60.32, 80, 100Cross bar pith(mm)38, 50, 76, 100, 101.6Thickness( ...