Foundation JTHL brand frictional Kelly Bar Used For Drilling rig
1. 3 - 6 telescopic tube for drilling depth from 10 - 150 m
2.Torque transfer capacity 30 - 500 kN.m
3. Locks and wear-resistant drive strips
| OEM/ODM | Both |
| Material | Q345B /Q460D / 35CrMo With Special Heat Treatment |
| Manufacture Process | Robot Welding ,Gas Shielded welding , Manual DC Welding |
| Tailored | Round /Square |
Specification
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