How much a rotary drilling Kelly bar?

The Kelly bar price depands on it's outer diameter and drilling depth, also the materials and other factors. Immediately offer once get your needs about piling machine model + Drilling depth needs. 




1. Interlocking Kelly bar

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2. KR Drill - Characteristic


Materials---What we agree with ?

A-We fully understand that the Materials is the first key step to make the good Kelly bar,

so strictly control of pipes materials -SY550/ZT600 under quenched-tempered heat treatmentment

B-Reasonable radian of Kelly ribs and Pressure Key board of 30CrMoTi

C-Bottom inner hole design of Kelly box for better performance of heat-treatment with 35CrMo.


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Contructure---What we understand?

A-Professional technical engineer to make the optimal gaps of each sections in order to

be more safer and longer life.

B-3 or 6 sets Kelly ribs and customized Pressure key boards reasonable matches to be 

adaptabe for complicated geological conditions.

C-Reinforcement ring was attaced on each termiinal joint top to reduce the risk of 

cracking during drilling. 

D-Patened technology like the wider of IMT Kelly ribs to be more wear-resistant.


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Welding---What we pay attention to ?

Except the professional machine welding, the experienced welder will be for the key 

parts with professional manual welding to be longer working life.


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3. Warranty time

ONE year or 2000 hours is the warranty of our Kelly bar. We treat our reputaion and your

 satisfaction as our company life.

4. Quality control

Formal details drawing will be sent for confirming producing, strictly rule for arrange and

cutting materials, professional technical will pay attention to the key parts by manual 

welding, Detector will test all the sections after producing, and assembling sections in 

order to confirm the overall fluency of Kelly bars. 


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5. Delivery time & Package

A-7 working days after confirm the order.

B-Export standrad package by aluminum film rapped, with palley under for lifing and 

shipping. Small worn parts are packed by wooden box for successfully shipment.


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6. Maintenance & After-sale service

Worn parts like Springs,Terminal joint,Kelly box,Flange parts...as ready stock in case of 

emergency needs. Online video service once small case and Engineers overseas service 

once quality problems. 


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7. Tips of Kelly bar daily using & maintenance

Good habits will effectively avoid damage of the Kelly bar.

a-Open it regularly for inspection and repair in time when wear is found.

b-Regularly check the welding seam.

c-Look at the appearance, listen to the sound of pumping and pulling, feel the friction 

and the sense of impact of each section.


8. Parameters

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9. Construction Cases


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10. What we supply?


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