I-Shape Steel Grating is used where high strength is required and light weight is critical with saving materials and more economical, perfect appearance.
I-Shape Steel Grating Features:
a)Type of bearing bar: 25x5x3,32x5x3,38x5x3,50x7x4,60x7x4,...75x7x4mm
b) Pitch of bearing bar: 12.5, 15, 20, 23.85, 25, 30, 30.16, 30.3, 34.3, 35, 40, 41, 60 mm.
c) Pitch of cross bar: 38,50,76,100,101.6mm
d) Material: mild steel or stainless steel
e) Finish: hot dip galvanizing, painted, untreated, mill
f) Steel grating standards:
1) China: YB / T4001 - 1998
2) USA: ANSI / NAAMM (MBG531 - )
3) UK: BS4592 - 1987
4) Australia: AS1657 - 1985
Steel Grating Types
Serrated I bar
Our raw materials are procured only from reputable sources that we regularly visit and audit.
Our material suppliers are all ISO 9001 certified and we procure our raw materials to the following minimum standards and grades:
ASTM A1011M (American Standard)
BS EN 10025 Grade S275 JR (British Standard and European Norm)
We manufacture our gratings to many international standards of which the most common are:
ANSI/NAAMM MBG 531-00 (American National Standard)
BS 4592-1:2006 (British Standard)
Our welders are tested and approved to the following standards:
AWS D1.1:2010 (American Welding Standard)
BS EN 287-1:2004 (British Standard and European Norm)
Hot Dip Galvanized
Our products are hot dip galvanized (if required) to the following standards:
ASTM A123 (American Standard)
BS EN ISO 1461:2009 (British Standard and European Norm)
Keys for installing the Gratings
The cross bars should be on the top while installing the gratings. The gratings should be always firmly attached onto their supports with following methods:
1. Welding Fixed
Suitable for those permanently installed gratings or those which are not to be removed frequently
2.Use of Clips and Screws
Suitable for gratings that are to be removed frequently.and won't damage the Grating itself.
3.Space for cutouts
When the cut of a corner is necessary while meeting a round obstacle, the diameter of the corner should be at least 50mm wider than that of the round obstacle. All rectangular cutouts are made with a space no wider than that of the flat iron of the graings.
Hebei Shengmai Construction Material Technology Co.,Ltd. established in 2008, we are professional metal fence manufacturer covering an area of 20,00 M2 with annual turnover of 10 millions dollars.