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MAIT Drilling Rig Kelly Bar

Kelly bars are key components to drilling rigs, as they can increase the service life of the rig. We continue to use MAIT kelly bars, as well as add our own patented designs to make MAIT interlocking and friction kelly bars. Each kelly bar produced by us has quality on par with those from MAIT, and have their own specifications for square head joint structures and kelly bar protecting rings. Hengq's kelly bars have become increasingly popular both here in China and around the world.

We provide drilling rig kelly bars in the following models: HR110, HR120, HR130, HR165, HR180, HR260, HR240-800, HR300-570, and HR420.

Our kelly drive stubs are available at 130 x 130, 150 x 150, and 200 x 200. Other specifications can be customized.

Weight is specifically not shown in the data sheet. Any weight information provided by us is approximate, and depends on the substance to drill. For weight information, please contact us.

Each kelly bar has a damping system consisting of the damping spring and rubber ring to reduce the damage from each impacted element.

Rig's Model Kelly Bar Domination Number of Tubes Outer Pipe Length (m) Drilling Depth (m) Transportation Length (mm)
HR100 Interlocking Friction 3 10 25 11.5
3 11.5 30 13
4 10 35 11.5
4 11.5 39 13
HR120 Interlocking 4 11 38 12.5
HR130 Interlocking Friction 3 9 22 10.5
3 11.5 30 13
3 13.5 35 15
4 9 30 10.5
4 11.5 40 13
4 13.5 48 15
5 9 38 10.5
5 11.5 50 13
5 13.5 60 15
HR180 Interlocking Friction 3 11.5 30 13
3 14 37 15.5
3 16.5 45 18
4 11.5 40 13
4 14 50 15.5
4 16.5 60 18
5 11.5 50 13
5 14 63 15.5
5 16.5 75 18
HR260 Interlocking Friction 3 11.5 30 13
3 14 37 15.5
3 16.5 45 18
3 21.5 60 23
4 11.5 40 13
4 14 50 15.5
4 16.5 60 18
4 21.5 80 23
5 11.5 50 13
5 14 63 15.5
5 16.5 75 18
5 21.5 100 23
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