Steel grating is welded by the world first-class equipment, which can arrange the bearing bar and cross bar in longitude and latitude order to certain distance. Cross bar is pressed into the bearing bar by high tension resistance weldingring which is controlled by computer. So we can produce high quality gratings withfirm welding, smooth surface and high strength.
Material: low carbon steel,mid steel or stainless steel
Surface Treatment: Untreated, Painting or Hot dip Galvanizing
Specification of steel grating
The shape of bearing bar: Plain type (may be omitted in the symbol of steel grating), Serrated type and I-Shape type
No | 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 galvanising, paint |
6 | Standard | China: YB/T 4001.1-2007 |
USA: ANSI/NAAMM(MBG531-88) | ||
UK: BS4592-1987 | ||
Australia: AS1657-1985 |
Tolerance of hot dip galvanized steel grating
The allowed deviation of length is +0/-5mm, while the allowed deviation of width is +/-5 mm.
The non-perpendicularity of bearing bar is allowed no more than 10% of width of bearing bar.
Cross bar surface should not surpass bearing bar surface 1mm, beginning & end of cross bar should not surpass the end surfaces of two sides of grating 2mm.
Steel grating application
Steel grating used in flooring, catwalk, mezzanines/decking, stair tread, fencing, ramp, dock, trench cover, drainage pit cover, maintenance platform, pedestrian/crowded pedestrian, factory, workshop, motor rooms, trolley channel, heavy loading area, boiler equipment and heavy equipment area, office buildings, apartments, train stations, department stores, hospitals, amusement parks, etc.
Hebei Qijie Wire Mesh MFG Co., Ltd. is located in Anping county, Northern China, which is famous as "the hometown of wire mesh" in the country.
Wanggezhuang industry,Anping County, Hebei province, China.
Tet / Fax: +86-318-7896133