XQ114/6B (4 1/2") 型修井动力钳是在油田修井作业中用来快速上卸扣的一种开口型动力钳，本产品具有以下特点：
Model XQ114/6B(4 1/2") hydraulic power tong is an open type power tong for the making up and breaking out of tubing in well services. This product has the following features:
The tong is made up of master tong and backup tong, the master tong has a high and low gear train, the tong is compact, light and efficient.
Two shifts provides high speed at the high gear and large torque at the low gear.
The brake mechanism is on the upper and so it is easy to adjust and repair.
The new type hydraulic Backup tong and master tong form a combined tong .Operating the manual control valve of master tong, the combined tong clipping and unloosing simultaneously.
The adequate torque will be gained during making up and breaking out the various steel tube by adjusting pressure of oil .
This product has owned several patent of China.