Specifications of steel gratings |
No |
Item |
Description |
1 |
Bearing bar |
20x5, 25x3, 25x4, 25x5, 30x3, 30x4, 30x5, 32x3, 32x5, 40x5, 50^ 75x8mm, etc. |
2 |
Bearing bar pitch |
25, 30, 30.16, 32.5, 34.3, 40, 50, 60, 62, 65mm, etc. |
3 |
Cross bar |
5x5, 6x6, 8x8mm (twisted bar or round bar) |
4 |
Cross bar pitch |
40, 50, 60, 65, 76, 100, 101.6, 120, 130mm or as customers' requirement. |
5 |
Surface treatment |
Untreated, Hot dip galvanized, Cold dip galvanized, Painted, Powder coated, or as customers' requirement. |
6 |
Flat bar type |
Plain, Serrated (tooth-like), I bar (I section) |
7 |
Material standard |
Low carbon steel (CN: Q235, US: A36, UK: 43A) |
8 |
Galvanization standard |
CN: GB/T13912, US: ASTM (A123), UK: BS729 |
9 |
Steel grating standards |
A. China: YB/T4001-1998 |
B. USA: ANSI/NAAMM (MBG 531-88) |
C. UK: BS4592-1987 |
D. Australia: AS1657-1988 |
E: Japan: JJS
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