... bearing bar size and mesh size 2. Largest production capability 3. Best Price 4. Reliable manufacturer 1. Comprehensive type and ... Standard: YB/T4001, ANSI/NAAMM-MBG531, BS4592, AS1657, JS31011.3 Grating Dimension Load Bearing Flat Bar sizeThickness≥3mm, depth ≥19mm19X3 ... gemel, so anti-theft and safe , easy to open.3. Eleven (11) sets of press welded (electro-forged welding) production lines creat ...