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 second 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
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