Welding Tips
Harris Welding Tip Chart
23A90 Brazing Tip Flow Chart
Acetylene
| Welding Metal Thickness |
Tip Size |
Acetylene Flow CFH** |
Equal Pressure |
Recommended Hose Size |
Sample Picture |
||
|---|---|---|---|---|---|---|---|
| English (inch) |
Metric (mm) |
Welding | Heating |  |
|||
| 1/64” | 0.4 | 0 | 1-3 | 5 | 1 | 3/16” | |
| 1/32” | 0.8 | 1 | 2-5 | 7 | 1 | 3/16” | |
| 3/64” | 1.2 | 2 | 3-8 | 10 | 2 | 3/16” | |
| 1/16” | 1.6 | 3 | 5-11 | 14 | 3 | 3/16” | |
| 3/32” | 2.4 | 4 | 6-14 | 18 | 4 | 3/16” | |
| 1/8” | 3.2 | 5 | 8-18 | 22 | 5 | 3/16” | |
| 3/16” | 4.8 | 6 | 10-20 | 30 | 6 | 3/16” | |
| ¼” | 6.4 | 7 | 13-25 | 35 | 7 | 3/16” | |
| 5/16” | 8.0 | 8 | 16-32 | 40 | 8 | 3/16” | |
| 3/8” | 9.4 | 9 | 20-37 | 50 | 9 | ¼” | |
| ½” | 12.7 | 10 | 24-42 | 60 | 10 | ¼” | |
| ¾” | 19.0 | 13 | 30-50 | 75 | 13 | 3/8” | |
| 1” | 25.4 | 15 | 35-65 | 90 | 15 | 3/8” | |
Reference: Harris Welding Tip Chart
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*Oxygen and acetylene pressures are set equal
**Oxygen flow 1.1 times acetylene flow for neutral flame. Low flow set to clear smoke with acetylene only flowing (soft flame). High flow set to hold flame on tip with acetylene only flowing (harsh flame).
Caution: Flow rate should not exceed 1/7 of the acetylene cylinder contents. For higher flow rates, use additional cylinders manifold in parallel. Hose sizes are suitable for hose lengths up to 25 ft. Higher pressures should be used for longer lengths. Heat output (BTU/hr) = acetylene flow x 1470 (1470 BTU/ft3).