... range in bearing bar size and mesh size 2. Largest production capability 3. Best Price 4. Reliable manufacturer 1. Comprehensive type and ... ANSI/NAAMM-MBG531, BS4592, AS1657, JS31011.3 Grating Dimension Load Bearing Flat Bar sizeThickness≥3mm, depth ≥19mm19X3,19X5,20X3, 20X5, 25X3 ... dimension is not limited to above.1.4 Grating type: Serrated I type,with square twisted cross bar.1.5 Finishing treatment ...