... -owned company) d.best price1.Comprehensive type and broadest range in dimension.1.1 Material Q235 ... AS1657, JS31011.3 Grating Dimension Load Bearing Flat Bar sizeThickness≥3mm, depth ≥19mm19X3,19X5,20X3, 20X5, ... 8, 35.3, 40, 60, 80……Pitch of cross bars(mm)38.1, 50, 50.8, 70 ... ; cross bar: round type and square twisted type. steel bar gratingSquare twisted cross bars are mostly used.And round cross bars ...