Drill through steel grating generally has holes in the center of the height of the bearing bars, penetrates the round cross bars, and welded firmly to the load-bearing flat steel.
This form of grating is often used in heavy-duty steel gratings. Compared with ordinary welded steel grating, the surface of perforated steel grating is smoother.
| Bearing Bar Size | Cross Bar Size | Bearing Bar Spacing(Center to Center) | Cross Bar Spacing(Center to Center) |
| 40 x 5 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 45 x 5 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 50 x 5 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 60 x 5 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 75 x 5 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 100 x 5 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 120 x 5 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 40 x 6 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 45 x 6 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 50 x 6 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 60 x 6 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 75 x 6 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 100 x 6 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 120 x 6 mm | Ø8 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 60 x 9 mm | Ø10 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 75 x 9 mm | Ø10 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 100 x 9 mm | Ø10 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 120 x 9 mm | Ø10 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 150 x 9 mm | Ø10 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
| 200 x 9 mm | Ø10 mm | 25 mm, 30 mm, 40mm, 50 mm | 50mm, 100mm |
Steel grating is more integrated
Effectively avoid the wear of twisted cross bar
The overall steel grating is more beautiful
