Steel grating, arranged in latitude and longitude with certain spacing of load flat bar and rail, is the finished goods deep processed with cutting, opening and wrapping upon users’ requests after being welded into the primitive plate by high pressure resistance welder. Its features are: high strength and light structure: solid grid pressure welding structure makes it high in load, light in structure and easy for lifting; pleasing appearance, durability: hot-dip galvanizing surface treatment brings it good anti-corrosion capability and its surface gloss and elegance; ventilation, lighting, cooling, good explosion-proof and anti-skid performances; dirt prevention It is widely used in platforms, walkways, bridges, ditch covers, pit covers, ladders, fences, guard rails and so on in fields such as petrochemical industry, power plants, water plants, sewage treatment plants, municipal works and sanitation projects.  

1) Bearing Bar (Load Bar) Specifications (mm):
The specification of plain type and serrated type bearing bar is 20 x 3 to 100 x 10,the specification of Isection type is 25 x 5 x 3, 32 x 5 x 3, 38 x 5 x 3, 40 x 5 x 3, 50 x 5 x 3, 50 x 7 x 4, 55 x 7 x 4, 60 x 7 x 4, 65 x 7 x 4, 70 x 7 x 4, 75 x 7 x 4, etc.

2) Bearing Bar Pitch (center to center):
12.5, 15,25, 30, 30.16, 32.5, 34, 40, 41.25, 45, 50, 60, 60.32, 80, 100 mmetc, and 30, 40, 60mm are recommended,

3) Cross Bar Pitch (center to center):
38, 50, 76, 100, 101.6mm etc,  and 50, 100mmare recommended, America standard is available.

4) Material:
Mild Steel (Low Carbon Steel) or Stainless Steel

5) Surface Treatment:
Untreated, Painting or Hot dip Galvanizing

6) Steel grating standards:
A) China: YB/T4001-1998
B) USA: ANSI/NAAMM (MBG531-88)
C) UK: BS4592-1987
D) Australia: AS1657-1985
E) Japan: JJS.

Steel grating specification: