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Lifting subs are used with drill collars to provide a shoulder to fit the drill pipe elevators;
Lifting Subs are of one-piece construction and manufactured from 4145M or 4140HT alloy steel. The Lifting Sub comes as tapered or square shoulder types and is available in all diameters and lengths.
When ordering, please specify:
Drill collar OD Tool Joint OD Tapered, square shoulder or combination Drill pipe OD Drill collar connection size & type Bore Pressed or cast steel thread protectors.
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