... .5,15, 20, 30, 30.6, 32.5, 34, 34.8, 35.3, 40, 60, 80……Pitch of cross bars(mm ... )38.1, 50, 50.8, 70, 75, 80, 100, 101.6, 102……The sizes and ... I type; cross bar: round type and square twisted type. www.cnstrongstar.com Anping Steel Grating(China)