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Steel Grating

Material:Carbon steel, stainless steel
Feature:High strength, light structure, high bearing
Application:Well covers, stairs, fencing for petroleum
   

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.

Manufacturer in regard to the manufacturing and processing of wire mesh fence.