Drill pipe (Heavy-weight (HWDP))
Heavy-weight drill pipe 102 mm, bore 57 mm
Heavy-weight heavy-weight drill pipe (HWDP), diameter 102 mm, bore 57 mm. Manufactured from steel grade S135, providing high resistance to fatigue loading. Tool joint thread GOST Z-108 / API NC40, upset OD 133.4 mm. Ideal for the transition zone of the drill string. When ordering, please specify the required length R1 / R2 / R3, bore and tool joint upset diameters for box and pin, as well as the delivery region.
Heavy-weight (HWDP)102 mm57 mmS135API Spec 7-1
| Type | Heavy-weight (HWDP) |
| Diameter (OD) | 102 mm |
| Steel grade | S135 |
| Bore (ID) | 57 mm |
| Tool joint OD | 133.4 mm |
| Length | R2 ≈ 9.1–9.5 m |
| Cross-section | Round |
| Thread protector | Metal |
| Standard | API Spec 7-1 |
| Condition | New |
| Thread type | GOST Z-108 (NC40) |
| Thread standard | API Spec 7‑2 |
| Thread direction | Right-hand |
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