Drill pipe (Drill collar (DC))
Drill collar 178 mm, bore 71 mm
We supply drill collar, diameter 178 mm, bore (ID) 71 mm. Steel grade AISI 4145H. Please specify in your enquiry: length, elevator recess, slick zone and any other requirements.
Drill collar (DC)178 mm71 mmAISI 4145HAPI Spec 7-1
| Type | Drill collar (DC) |
| Diameter (OD) | 178 mm |
| Steel grade | AISI 4145H |
| Bore (ID) | 71 mm |
| Length | R2 ≈ 9.1–9.5 m |
| Cross-section | Round |
| Thread protector | Metal |
| Standard | API Spec 7-1 |
| Condition | New |
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