Specifications
ZQJ178/90 drill pipe screwing tong is used to loosen/tighten joint of drill pipe in coal bed gas exploration and exploitationZQJ178/90 drill pipe screwing tong is designed and manufactured by Jiangsu Rushi Machinery Co., Ltd for coal bed methane drill rig. It is used to loosen/tighten joint of drill pipe in coal bed gas exploration and exploitation. Open throat design of tong head allows the tong to escape from drill pipe freely with high mobility. The tong is wholly hydraulic driven with large torque and reliable clamp. Forward-backward movement and upward-downward movement of the tong are driven via hydraulic cylinder, powerful and stable.
Model | ZQJ178/90 | |
| Working flow, hydraulic system | l/min | 40~60 |
| gal | 10.55~15.83 | |
| Working pressure, hydraulic system | MPa | 20.7 |
| psi | 3000 | |
| Maximum breakout torque | kN.m | 90 |
| ft.lbf | 66372 | |
| Applicable range | mm | φ114~φ178 |
| in | 27/8~51/2 | |
| Overall dimensions | mm | 1890×1196×1502 |
| in | 72.8×47.1×59.1 | |
| Weight | kg | 1850 |
| lb | 4078 | |
