Steel Grating Mesh:30x 50--30 x100mm Steel bar:25 x3mm-40 x3mm Twisted bar:5mm- ... , 60mm etc., also be according to client's requirement and 30,40mm are recommended3. Cross bar pitch: 38, 50, 76, 100mm, also ... : AS1657-1985Grating DimensionBearing bar pitch(mm)12.5, 15,25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60 ...