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Rotart Subs for Oild Drilling Saver Sub Lift Sub Operation Pressure Atmospheric Pressure
Descriptions of Rotart Subs for Oild Drilling Saver Sub Lift Sub Operation Pressure Atmospheric Pressure:
Rotary Subs are made from AISI 4145H modified quenched and tempered material. In addition, it is designed and manufactured according to API specifications as well as with API monogram. They can be used to crossover from connection size to another or as a disposable component used to extend the connection life of a more expensive drill stem member.
Specifications:
| Connection Thread(E) | Elevator Recess diameter(B) | Sub OD(A) | Diameter of lift shoulder(C) | Length(D) |
| 3 1/2''IF | 3 1/2'' | 4 3/4'' | 4 3/4'' | 36'' |
| 4 1/2''IF | 5'' | 6 1/2'' | 6 1/2'' | 36'' |
| 4''IF | 5'' | 6 1/4'' | 6 1/2'' | 36'' |
| 6 5/8''REG | 5'' | 8'' | 6 1/2'' | 36'' |
| 2 7/8''HT PAC | 2 5/8'' | 3'' | 3 3/8'' | 36'' |
| XT-39 | 4'' | 5'' | 6'' | 36'' |
