DSINGLE JOINT ELEVATOR
1.Description
⑴DDF type center latch single joint elevators are conventional tools for handling a single joint of casing or tubing in oil and gas drilling operation, the rated load are 5t(45kN) and 10t(90kN), and cover pipe sizes from 4½in to 20in OD. SJ single joint elevators are designed and manufactured in accordance with API Spec 8C.
⑵The compositions and their representing meanings of SJ type center latch single joint elevators:
2.Specifications for center latch single joint elevators
Chart for specifications of center latch single joint elevators:
| specification | pipe O.D. (in) | pipe O.D. (mm) | Rated Load kN(t) |
| DDF117/45(4½/5) | 4½ | 116.69 | 45(5) |
| DDF142/45(5½/5) | 5½ | 142.88 | |
| DDF171/45(6⅝/5) | 6 | 171.45 | |
| DDF181/45(7/5) | 7 | 180.98 | |
| DDF197/45(7⅝/5) | 7⅝ | 197.64 | |
| DDF223/45(8⅝/5) | 8⅝ | 223.04 | |
| DDF248/45(9⅝/5) | 9⅝ | 248.44 | |
| DDF277/45(10¾/5) | 10¾ | 277.83 | |
| DDF331/45(12⅞/5) | 12⅞ | 331.80 | |
| DDF344/45(13⅜/5) | 13⅜ | 344.50 | |
| DDF350/45(13⅝/5) | 13⅝ | 350.85 | |
| DDF360/45(14/5) | 14 | 360.76 | |
| DDF411/45(16/5) | 16 | 411.40 | |
| DDF479/90(18⅝/5) | 18⅝ | 479.43 | 90(10) |
| DDF515/90(20/5) | 20 | 515.14 |