Drill pipe (Kelly)
Kelly 89 mm, bore 57 mm
We supply kelly (square drill pipe), diameter 89 mm, bore 57 mm. The pipe meets steel grade 45KhGMA and GOST 631-75, ensuring reliable performance in drilling operations. Box diameter, pin diameter, elevator groove and length can be tailored to your requirements. Specify the parameters in your enquiry — we will discuss the details and answer your questions.
Kelly89 mm57 mm45KhGMAGOST 631-75
| Type | Kelly |
| Diameter (OD) | 89 mm |
| Steel grade | 45KhGMA |
| Bore (ID) | 57 mm |
| Length | R2 ≈ 9.1–9.5 m |
| Cross-section | Square |
| Thread protector | Metal |
| Standard | GOST 631-75 |
| Condition | New |
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