... serrated grid Material:stainless steel Bearing bar: 30 x3mm Mesh opening: 30 x100mm Width: ... 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, ... type and square twisted type. steel bar gratingSquare twisted cross bars are mostly used.And round cross bars normally used for fine-mesh ...