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Steel Grating Steel Grating/Metal Grid/Bar Grating Steel driveway grates grating / steel grating / grating
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 we can produce high quality gratings
withfirm welding,smooth surface and high strength.
1.material: low carbon steel,mid steel or stainless steel
2.Surface Treatment: Untreated, Painting or Hot dip Galvanizing
3.Specification of steel grating
(1)The shape of bearing bar: Plain type (may be omitted in the symbol of steel grating), Serrated type
|
Smooth surface welded steel grating |
Serrated surface welded steel grating |
| Specifications of Welded Steel Grating | ||||
|---|---|---|---|---|
| Item | Specifications of Bearing Bar | Diameter of Cross Bar | Pitch of Bearing Bar | Pitch of Cross Bar |
| (mm) | (mm) | (mm) | (mm) | |
| QD-2036 | 20 × 3 | 6 | 30 | 100 |
| QD-2056 | 20 × 5 | 6 | 30 | 100 |
| QD-3036 | 30 × 3 | 6 | 30 | 100 |
| QD-3046 | 30 × 4 | 6 | 30 | 100 |
| QD-3056 | 30 × 5 | 6 | 30 | 100 |
| QD-3236 | 32 × 3 | 6 | 30 | 100 |
| QD-3256 | 32 × 5 | 6 | 40 | 100 |
| QD-3536 | 35 × 3 | 6 | 40 | 100 |
| QD-3556 | 35 × 5 | 6 | 40 | 100 |
| QD-4036 | 40 × 3 | 6 | 40 | 50 |
| QD-4046 | 40 × 4 | 6 | 40 | 50 |
| QD-4056 | 40 × 5 | 6 | 40 | 50 |
| QD-45510 | 45 × 5 | 10 | 60 | 50 |
| QD-50510 | 50 × 5 | 10 | 60 | 50 |
| QD-55510 | 55 × 5 | 10 | 60 | 50 |
| QD-60510 | 60 × 5 | 10 | 60 | 50 |
| QD-65510 | 65 × 5 | 10 | 60 | 50 |
| QD-70510 | 70 × 5 | 10 | 60 | 50 |
|
galvanized bar grating |
heavy duty bar grating |
|
platform steel grating |
press lock steel grating |
|
painted bar grating |
smooth-welded-steel-grating |
4.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.
5. 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
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