... Best Price 4. Reliable manufacturer 1. Comprehensive type and broadest range in dimension.1.1 Material Q235 ... NAAMM-MBG531, BS4592, AS1657, JS31011.3 Grating Dimension Load Bearing Flat Bar sizeThickness≥3mm, depth ≥19mm19X3,19X5, ... 7, 25X5…..40X6, 40X8, 40X10,….90X6….Pitch of Load bearding flat bars(mm)12.5,15, 20, ... not limited to above.1.4 Grating type: Serrated I type,with square twisted cross bar.1. ...