Lifting Sub
Lifting Sub
- Manufactured from 4145M or 4140HT alloy steel.
- All lifting subs are complied with API standard.
- A lift sub enables the safe, effective and efficient handling of straight OD tubular such as drill collars, shock tools, directional equipment jars, and other tools using the drill pipe elevators.
- Lift subs are simply screwed to the top of the tool and feature an elevator groove.
| Elevator groove OD (inch) | Sub OD (inch) | Length (inch) | Connection |
| 2-3/8 | 2-7/8 |
36/47 | NC23 |
| 2-7/8 | 3-1/2 | NC26 | |
| 3-1/2 | 4-1/8, 4-3/4 | NC31, NC38 | |
| 4-1/2 | 6-1/4 | NC46 | |
| 5 | 6-1/2, 7 | NC46, NC50, 5-1/2FH | |
| 5-1/2 | 8 | NC56,5/8REG | |
| 6-5/8 | 9 | 7-5/8REG | |
| Lifting sub can be customized as per customer’s design. | |||
Lifting sub is the special tools for lifting of the drill tools in petroleum, natural gas industry and geologic exploration. There’re two types for drill tool lifting sub in structure: type A or B. Type A lift sub is with 18 degree shoulder, and type B is with 90 degree shoulder. All lifting subs are complied with API standard.
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