Square Kelly and Hexagonal Kelly, drill kelly with API standards, kelly valve, kelly cock match with.

Description

Kelly is located in the top of the drill string, with square and hexagonal. In rotary drilling, when it\'s drilling, kelly connected with square bushing and rotary bushing, transfer the ground rotary torque to drill pipe and to drive the drill bit, bearing the weight of drill string. In the drilling of the turbine and drilling motor, the weight of drill string and the counter torque are supported.


Orchid Energy Co could provide square kelly and hexagonal kelly which is manufactured strictly according to API Spec**1 standard. Material from AISI ***5H modified, fully heat treated alloy steel with Brinell hardness range of ******1 and a minimum Charpy impact of *0 ft-lbs. Kelly bars are ultrasonically inspected over full length and section.