... supplier 2. Good quality steel grating 3. Easy installation & saving work ti 1.Comprehensive ... 25X5…..40X6, 40X8, 40X10,….90X6….Pitch of Load bearding flat bars(mm)12.5,15, 20, 30, 30.6, 32. ... 34.8, 35.3, 40, 60, 80……Pitch of cross bars(mm)38.1, 50, 50.8, 70, 75, 80, ... I type, serrated type, serrated I type; cross bar: round type and square twisted type. www.cnstrongstar.com Anping Steel Grating(China)