1>Bearing bar pitch:30,40,60mm 2>Cross bar pitch; ... d.best price1.Comprehensive type and broadest range in dimension.1.1 Material Q235 , or other equivalent material1.2 Grating Conformity Standard ... .3, 40, 60, 80……Pitch of cross bars(mm)38.1, 50, 50.8, 70, 75, 80, 100, 101.6, 102 ... ……The sizes and dimension is not limited to above.1.4 Grating type: flat bar: plain type, plain I type ...