... Easy installation & saving work ti 1.Comprehensive type and broadest range in dimension.1.1 Material Q235 , or other equivalent ... , 25X4.7, 25X5…..40X6, 40X8, 40X10,….90X6….Pitch of Load bearding flat bars(mm)12.5,15, 20, 30 ... 34.8, 35.3, 40, 60, 80……Pitch of cross bars(mm)38.1, 50, 50.8, 70, 75, 80, 100 ... cross bar: round type and square twisted type. www.cnstrongstar.com Anping Steel Grating(China)