Kelly By Mudanjiang Dongxu Machingery Co., Ltd.

We are instrumental in providing Kelly which locating on the upper end of the drill string are the driving section of whole drill stem. It is divided into square kelly and hexagonal Kelly. In the course of turntable drilling, the kelly will pass on the turntable torque on the ground to drill pipe together with kelly bushing, turntable bushing, and put the drill bit in motion, bear the hook load of drill string. Among the drilling well of the turbine and screw,it can bear the hook load and reversing torque of the drill string.