Metal grating, steel grating, bar grating, fiber grass louver, floor grating, stair grating, trench covers, press locked bar grating, tread plates, stainless grating, tree tread grating.
Metal grating is extremely versatile and can be used in a wide range of applications. Our metal gratings are manufactured from a special fully-killed steel that meets the requirements of good weldability and high load-bearing capacity.
Basic terms:
BEARING BARS: Equally rolled flat bar to bear the main load
CROSS BARS: The erung squre steel ( also called twisted steel ) or round bar which is orthogonalized with the bearing flat bars, the cross section shall not be less than 20mm2.
END BAR: Finishing bar of same section as the bearing bar welded across the ends of the bearing bars also around cutouts and notches where these occur.
The bars used to secure the position of the bearing bars are commonly designated as the cross bars. Cross bar profiles vary according to the method of assembly and material selected. As with bearing bars, cross bar spacing is measured as "on center" spacing. The customary cross bar spacing is 4" on center. On special order, 2" on center and other special spacings are also available.
Methods of assembly:
WELDED GRATING, SWAGED PRESSURE LOCKED, DOVETAIL PRESSURE LOCKED, RIVETED GRATING
Uses include:
Flooring, stair treads, sun shades, drain covers, security screens, manhole covers, mezzanine flooring, earth mats, shelving, stanchions ( hand rails )
Load bar direction and spacing
It is important to check the direction of the load bars when ordering metal grating as the load bar must take the weight on top of the support to prevent collapse
Size:
The most common size bar thicknesses range from 20mm up to 50mm. If a larger size is required please contact us.
Standard sheet sizes:
Our metal grating is manufactured to the following sizes. From this we can cut to any size to suit your requirements.
Mild steel - 5800mm (load bar) x 1000mm
Aluminium - 5000mm (load bar) x 1000mm
F. R. P - 1220mm x 2440mm (3660)
Finishes:
Metal Grating Limited products can come in a variety of finishes:
Mild Steel - Black (untreated) or galvanized
Aluminium - Mill, anodized or powder coated
F. R. P - Isophthalic polyester. ( This is standard but many other options are available upon request )
No
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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 gal vanized , paint
|
6
|
Standard
|
China: YB/T 4001.1-2007
|
USA: ANSI/NAAMM(MBG531-88)
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UK: BS4592-1987
|
Australia: AS1657-1985
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