Steel grating cover is fibricated by customers' drawings. Many projects need gratings with different shapes to install. Square, round, Rectangle, and irregular shapes.
The bearing bar comes in the form of a plain surface flat bar, commonly used for platforms, trench
gratings, and stair treads.
Ningbo Jiulong Machinery Manufacturing Co.,Ltd is the largest steel grating manufacturer in China. We have 7 running lines with yearly capacity of 50,000tons. Jiulong grating has exported to more than 30 countries. Choose Jiulong grating is your right decision!
Standard descriptions:
| No | Item | Description |
| 1 | Bearing bar | 25x3,25x4,30x3,30x4,30x5,32x5,40x5,50x5,.....75x10mm |
| 2 | Bear bar pitch | 12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40,41,60mm. US standard: 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16", 1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1/4" etc. |
| 3 | Cross bar pitch | 38,50,76,100,101.6mm |
| 4 | Material | Q235,A36,SS304 |
| 5 | Surface treatment | Black, hot dipped galvanising, paint |
| 6 | Standard | China: YB/T 4001.1-2007 |
| USA: ANSI/NAAMM(MBG531-88) |
| UK: BS4592-1987 |
| Australia: AS1657-1985 |
