galvanised steel grating

1.Spacing:20-100mm 3.zinc 45-280g steel grating 3.steel 20*2mm,25*3mm,32*3m 4.pressed and press weled 5.steel,plastic..

STEEL GRATING

1.Introduction of steel grating:

   Steel 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.

 2.Basic terms of steel grating:

A)Bearing bars: Equally rolled flat bar to bear the main loadB)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.C)End bars: 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.

D)Action of bars: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.

3.Methods of assembly:

Welded grating,Swaged pressure locked,Dovetail pressure locked,Riveted grating,

4.Use of steel grating:

Flooring, stair treads, sun shades, drain covers, security screens , manhole covers, mezzanine flooring, earth mats, shelving, stanchions ( hand rails )

5.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

6.Sizes of steel grating:

The most common size bar thicknesses range from 20mm up to 50mm. If a larger size is required please contact us.

7.Standard sheet sizes:

Our steel 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)

8.Finished:

Steel 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 )

9.Specification:

Series No	Vertical Bar Spacing	Horizontal Bar Spacing	Specification of Supporting Flat Steel                         Width X Thickness                              (mm) (mm)
			20×3	25×3	32×3		40×3	20×5	25×5
1	30	100	G203/30/100	G253/30/100	G323/30/100	G403/30/100		G205/30/100	G255/30/100
		50	G203/30/50	G253/30/50	G323/30/50	G403/30/50		G205/30/50	G255/30/50
2	40	100	G203/40/100	G253/40/100	G323/40/100	G403/40/100		G205/40/100	G255/40/100
		50	G203/40/50	G253/40/50	G323/40/50	G403/40/50		G205/40/50	G255/40/50
3	60	50	-	G253/60/50	G323/60/50	G403/60/50		G205/60/50	G255/60/50
			32×5	40×5	45×5	50×5		55×5	60×5
4	30	100	G325/30/100	G405/30/100	G455/30/100	G500/30/100		G555/30/100	G605/30/100
		50	G325/30/50	G405/30/50	G455/30/50	G500/30/50		G555/30/50	G605/30/50
5	40	100	G325/40/100	G405/40/100	G455/40/100	G500/40/100		G555/40/100	G605/40/100
		50	G325/40/50	G405/40/50	G455/40/50	G500/40/50		G555/40/50	G605/40/50
6	60	50	G325/60/50	G405/60/50	G455/60/50	G500/60/50		G555/60/50	G605/60/50

galvanised steel grating