Drill stem subs and connections



The items are designed to join separate parts of the drill pipes with different threads.

Technical performances
Normative documents  Technical Specifications TU 3668-263-07500243-2011, API Spec 7-1
Sub types P - bottleneck
М - with box ends
N - with pin ends
1 - cylindrical
2 - stepped
Tool joint threads З – 65… З – 177. Thread connection of Premium Class - ТМК TDS
Threads right-hand and left-hand
Types according to API  - lifting sub with tapered shoulders;
- lifting sub with straight shoulders;
- subs for drill strings of А, В, С type for rotary drilling.

Upon request, fitting and lifting connections for drill pipes, HWDP and BDC can be manufactured.

Catalogue Oilfield and drilling equipment download.


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