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Steel grating is a kind of widely used grid products. They are used in various industrial fields and has the strongest resistance to surface impact.
There are mainly four types bearing bars as belowing which are frequently used for steel gratings.
Here we mainly introduce the I bar gratings. Same as normal bearing bars, there are two type of the I bars, plain type I bar and serrated type I bar. The main advantage of I bar steel grating is it is with high strength – to- weight ratio.
No. | Item | Description |
1 | Bearing bar | 25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10---100x10mm etc I bar: 25x5x3, 30x5x3, 32x5x3, 40x5x3 etc US standard: 1''x3/16'', 1 1/4''x3/16'', 1 1/2''x3/16'', 1''x1/4'', 1 1/4''x1/4'', 1 1/2''x1/4'', 1''x1/8'', 1 1/4''x1/8'', 1 1/2''x1/8'' etc |
2 | Bearing bar pitch | 12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 32.5, 34.3, 35, 38.1, 40, 41.25, 60, 80mm etc US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc. |
3 | Cross bar | 5*5,6*6,8*8mm(twisted bar or round bar) |
4 | Cross Bar Pitch | 38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc |
5 | Material Grade | ASTM A36,A1011,A569,Q235,S275JR,SS304,SS400, Mild steel & Low carbon steel,etc. |
6 | Surface Treatment | Black, self colour, hot dip galvanized, painted, spray coating |
7 | Flat bar type | Plain,Serrated(tooth-like),I bar (I section) |
8 | Standard | China:YB/T 4001.1-2007,USA:ANSI/NAAMM(MBG531-88), UK:BS4592-1987,Australia:AS1657-1985, Germany:DIN24537-1-2006, Japan:JJS. |
flat bar/mm | cross bar | flat bar pitch | cross bar pitch |
20*5 | 6*6mm, 8*8mm | 30mm 40mm 60mm | 100mm 50mm |
25*5 | |||
32*5 | |||
40*5 | |||
50*5 | |||
65*5 | |||
75*6 | |||
100*8 | |||
100*10 |
* Anti slip bridge decking
* Bridge walkway
* Drainage systems
* Fire truck platforms
* Mass transit platforms
* Marine and ship decks
* Mezzanines
* Non-slip walkways
* Non-skid pit covers
* Slip resistant platforms
* General Industries
* Truck platforms
* Vault covers
* Wet Decks
* Wastewater treatment plant grating
* Stair treads