| No. | Orifice Size (mm) | Cutting Thickness (mm) | Oxygen Pressure (psi) | Acetylene Pressure (psi) | Propane Pressure (psi) |
| 000# | 0.8 | 1~5 | 15-30 | 5-15 | 5-15 |
| 00# | 0.9 | 5~10 | 20-35 | 5-15 | 5-15 |
| 0# | 1 | 10~15 | 30-50 | 5-15 | 5-15 |
| 1# | 1.2 | 15~25 | 40-65 | 5-15 | 5-15 |
| 2# | 1.6 | 25~50 | 40-65 | 10-15 | 10-15 |
| 3# | 2 | 50~100 | 40-65 | 10-15 | 10-15 |
| 4# | 2.4 | 100~175 | 50-80 | 10-15 | 10-15 |
| 5# | 2.8 | 175~250 | 65-80 | 10-20 | 10-20 |
| 6# | 3.2 | 250~300 | 70-95 | 10-20 | 10-20 |
