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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
Contact Us
- Tel: +86 22 58036102
- Fax: +86 22 58032211
- Email: sales@zzsteel.net
- Whatsapp/Wechat: +8615822139806
- Website: http://tj.zzsteel.net/
- Add: 2302# No.57 Jinbin Road, Hedong District, Tianjin, China