Hot Dip Galvanized Steel Grating- GI Steel Grating

Specification of Steel Grating:

1. The shape of bearing bar: Plain type (may be omitted in the symbol of steel grating), Serrated type and I-Shape type

2. Bearing bar pitches can be 12.5, 15, 20, 30, 30.16, 32.5, 34.3, 40, 60mm, of which 30mm & 40mmare recommended.

3. Cross bar pitches can be 38, 50, 60,100mm, of which 50mm & 100mm are recommended.

4. Surface treatment: Hot-dip galvanizing, paint or other anti-corrosive coatings are available, of which hot-dip galvanizing is generally recommended.

5. Material: Q235 in line with GB/T700 steel

6. Tolerance

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.

7. Standard:

Application of Steel Grating:

Steel grating can be used in the fields of 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, etc

1.Plain: one of the most widely used gratings, available for flooring, sidewalk, drainage pit cover, stair tread, etc.

2.Serrated: Better non-skid property & safety compared with plain grating.

3.I-shape: lighter, more economical and practical comparing with plain grating.

Manufacturing Process of Steel Grating:

Material-welding-cutting-end plate welding-surface treatment-final shipment