Gnee Steel (tianjin) Co., Ltd
Professional Steel Grating & Safety Grating Manufacturer
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Grating, also called steel grating or steel bar grating, refersto the steel bar grating made of mild carbon steel throughsurface treatment.
Mild carbon steel provides an economical, high strength foruses in most industrial and commercial applications.
Steel grating is available in various material, such asstainless steel, aluminum, and galvanized steel.
| Specifications of steel gratings | |
| Bearing bar | 20x5,25x3,25x4, 25x5,30x3,30x4,30x5,32x3,32x5,40x5,50...75x8mm, etc. |
| Bearing bar depth | 25,30,30.16,32.5,34.3,40,50,60,62,65mm, etc. |
| Cross bar | 5x5, 6x6,8x8mm (twisted bar or round bar) |
| Cross bar spacing | 40, 50,60,65,76,100,101.6,120,130mm or as customers' requirement. |
| Flat bar type | Plain, Serrated (tooth-like), l bar (l section) |
| Surface treatment | Untreated |
| Hot dip galvanized | |
| Cold dip galvanized | |
| PVC coated | |
| Powder coated | |
| Note: 1.Special sizes avaliable at request. 2.Packing:in plastic in rolls. Custom packing available at request. | |
1. Bearing Load bar: 25x3,25x4,30x3,30x4,30x5,32x5,35x5,40x5,50x5 to 75x10mm.
2. Bearing Load bar pitch: 12.5, 15, 20, 25,30,35,40,45,60mm. 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: 40,50,100mm.
4. Surface finishing treatment: Untreated Black, Electric Galvanized, Hot Dipped Galvanized, Painted.
5. Standard China: YB/T 4001.1-2007
USA: ANSI/NAAMM(MBG531-88)
UK: BS4592-1987
Australia: AS1657-1985
| Series | Pitch of Bearing bar | Pitch of Cross bar | Specifications of Bearing Bar (Width x Thickness) | |||||
| 25x3 | 32x3 | 25x4 | 40x4 | 20x5 | 25x5 | |||
| 1 | 30 | 100 | WA253/1 | WA253/1 | WA254/1 | WA404/1 | WA205/1 | WA255/1 |
| 50 | WB253/1 | WB253/1 | WB254/1 | WB404/1 | WB205/1 | WB255/1 | ||
| 2 | 40 | 100 | WA253/2 | WA323/2 | WA254/2 | WA404/2 | WA205/2 | WA255/2 |
| 50 | WB253/2 | WB323/2 | WB254/2 | WB404/2 | WB205/2 | WB255/2 | ||
| 3 | 60 | 50 | WB53/3 | WB323/3 | WB254/3 | WB404/3 | WB205/3 | WB255/3 |
| Series | Pitch of Bearing Bar | Pitch of Cross Bar | Specifications of Bearing Bar (Width x Thickness) | |||||
| 32x5 | 40x5 | 45x5 | 50x5 | 55x5 | 60x5 | |||
| 1 | 30 | 100 | WA325/1 | WA405/1 | WA455/1 | WA505/1 | WA555/1 | WA605/1 |
| 50 | WB325/1 | WB405/1 | WB455/1 | WB505/1 | WB555/1 | WB605/1 | ||
| 2 | 40 | 100 | WA325/2 | WA405/2 | WA455/2 | WA505/2 | WA555/2 | WA605/2 |
| 50 | WB325/2 | WB405/2 | WB455/2 | WB505/2 | WB555/2 | WB605/2 | ||
| 3 | 60 | 50 | WB325/3 | WB405/3 | WB455/3 | WB505/3 | WB555/3 | WB605/ |