... 40X6, 40X8, 40X10,….90X6….Pitch of Load bearding flat bars(mm)12.5,15, 20, 30, 30.6, ... 8, 35.3, 40, 60, 80……Pitch of cross bars(mm)38.1, 50, 50.8, 70, 75, ... bar: round type and square twisted type. Square twisted cross bars are mostly used.And round cross bars are normally used ... ) production lines creat largest production capability, flexible and controlled delivery to cater to the variety of needs ...