Dongying Boru Mechanical Equipment Co.,Ltd
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. | |||
