Safety Joint Type HAJ&JAJ
Model “H&J ” Safety Joint is a reliable device for fishing, milling and testing. It can be mounted on the necessary part of drill string. Moreover, it can bear all kinds of tension/pressure load and transitive torque. If necessary, it can be back away as to take out the pipes string above Safety Joint during down-hole operation. When drilling-in again, it's easy to connect with Safety Joint well as for continued operation.
Specifications
| Model | O.D.mm(in) | I.D.mm(in) | Connection |
Max. Working torquekN·m(lbf·ft) | Max. Working pull force kN(lbf) | Shear load kN(lbf) | ||
| Aluminous dowel | Cupreous dowel | Steel dowel | ||||||
| HAJ121 | 121(4-3/4) | 54(2-1/8) | NC38 | 12(8700) | 1000(224800) | 56(12588) | 85(19100) | 113(25400) |
| HAJ159 | 159(6-1/4) | 57(2-1/4) | NC50 | 16(11000) | 1500(33720) | 88(19780) | 132(29673) | 176(39564) |
| JAJ159 | 159(6-1/4) | 50(2) | NC50 | 16(11000) | 1500(33720) | |||
| HAJ165 | 165(6-1/2) | 57(2-1/4) | NC50 | 18(13000) | 1500(33720) | |||
| HAJ178 | 178(7) | 80(3-1/8) | 5 1/2FH | 22(16000) | 2000(449600) | 127(28550) | 137(30797) | 225(50580) |