适用于油田上卸套管，作业效率高，显著降低工人劳动强度，提高上扣质量。该钳具有以下特点：
¨开口型，**佳切径比设计；
¨ 刹带制动，采用上下扶正机构；
¨ 配扭矩表，可选配扭矩控制系统，显示、控制和记录上扣扭矩。
The Casing tong is used to make up
and break out for casing operation in oil fields. It has greatly
reduced the labor of worker, enhanced connection quality of thread
and diminished accidents in inappropriate casing operation. The
power tong has the following features as well:
¨ Opening type,
double swing head jaws, convenient to assemble and
disassemble.
¨ Brake belt assembly,
Open gear supporting structure, improving the strength and
rigidity.
¨ Wholly hydraulic mode and
mechanical gear shift.
¨ With torque gauge,
optional torque control system to display, control and record the
make-up torque.
