... .5, 25X4.7, 25X5…..40X6, 40X8, 40X10,….90X6….Pitch of Load bearding flat bars(mm)12.5,15, 20, ... 34, 34.8, 35.3, 40, 60, 80……Pitch of cross bars(mm)38.1, 50, 50.8, 70, ... and controlled delivery to cater to the variety of needs of customers.3. The high-tec techneque and ... equipment guarantee high quality of gratings. Most of machine were imported from Japan, Germany,Switzerland ...