Lift subs
OCTL Lift Subs are made from AISI 4140/ 4145H modified alloy steel, fully heat treated to a Brinell Hardness range of 285 – 341 and have an IZOD impact strength of minimum 40 ft-lbs. The connections are machined, cold rolled, and phosphatized to prevent galling during initial make-up, and are shipped with pressed steel thread protectors installed.

For Lift Subs, please specify:

Drill Collar OD

Tool Joint OD

Tapered, square shoulder or combination

Drill Pipe OD

Drill Collar connection size and type

Bore


Note: Add 6 inches to overall length for a box in the top of the Lift Sub.
 

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