Tread Stair / Heavy Welded Metal Steel Grating / Steel Grating
1.Steel grating standards:
A) China: YB/T4001.1-2007
B) USA: ANSI/NAAMM (MBG531-88)
C) UK: BS4592-1987
D) Australia: AS1657-1985
E) Japan: JJS.
2. Bearing bar specification:20*3 to 100*6
3. Bearing bar pitch:12.5,15,25,30,40,60mm etc. also be according to clients requirement
and 30,40,60mm are recommended
4. Cross bar picth:38,50,76,100mm,also be according to clients requiremen and 50,100mm
5. The Maximun length of black panel is 7350mm.
6. Materials: mild steel or stainless steel.
7. Surface treatment: untreated, painting or hot dip galvanizing.
8. Steel grating with America standard can also be fabricated.
9.Steel grating advantage:
Light weight, great load-bearing capacity, non-slip and safe, easy
installation, material-economic, sturdy and durable, ventilated,
easy to clean and attractive appearance.
10.Specifications of steel grating:
20x5, 25x3, 25x4, 25x5, 30x3, 30x4, 30x5, 32x3, 32x5, 40x5,
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
|Bearing bar pitch|
25, 30, 30.16, 32.5, 34.3, 40, 50, 60, 62, 65mm, etc.
US standard: 19-w-4, 15-w-4, 11-w-4, 19-w-2, 15-w-2 etc.
|Cross bar||5x5, 6x6, 8x8mm (twisted bar or round bar)|
|Cross bar pitch||40, 50, 60, 65,76,100,101.6,120,130mm or as customers’ requirement.|
|Flat bar type||Plain, Serrated (tooth-like), I bar (I section)|
|Materials||Low carbon steel (Q275/Q235/Q195,ASTM A36, A1011, A569, S275JR,
SS304, SS400,UK: 43A),Stainless steel,aluminum alloy,etc|
|Galvanizing standard||CN: GB/T13912, US: ASTM (A123), UK: BS729|
|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|
Black,Electro galvanized(Cold dip galvanized),Hot dipped
galvanized,Painted,Powder coated,or as customers’ requirements.And
hot dipped galvanizing is generally recommended.