Specifications

steel grating stairs
1.Galvanized steel grating
2.Metal grating
3.ASTM A123,SS400

steel grating stairs  

 

1)Material: There are mill steel black, hot dip Galvanizing  and stainless steel grating.

 

2)Usage:  flooring walkway, platform ,steel structures, stair tread, well cover, trench cover, sump cover,compound gratings, storage shelves, ladder, fences and handrail so on for construction project, oil project, seaport, power plant, water plant, defense project, chemical factory and so on.

 

 

3)Types: Plain Style Steel Grating, Serrated Style Steel Grating and I Bar Type Steel Grating.

 

4)Surface Treatment:
Untreated, Painting ,Powder coated or Hot dip Galvanizing

 

 

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

picture 

 

 

       steel grating 1                                                   steel grating 2                                                           steel grating 3

          steel grating 4                                                    steel grating 5                                                  steel grating 6