Drilling coupling
DRILLING COUPLING
| Description | Coupling O.D (mm) | Standard | Thread O.D (mm) |
| Φ 43 | Φ 44 | 74.7 | Φ 34 |
| Φ 43 | Φ 44 | 76.7 | Φ 35 |
| Φ 43 | Φ 44 | DZ 1.1-84 | Φ 35 |
| Φ 50 |
Φ 52 | 74.7 | Φ 41.5 |
| Φ 50 | Φ 52 | 76.1 | Φ 42.5 |
| Φ 54 | Φ 55 | DZ 1.1-84 | Φ 46 |
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