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Kelly bar is the key part of a drilling machine, and its quality directly affects the performance of the whole machine.Based on the rich manufacturing experience and by absorbing the advanced technology both at home and abroad, we can produce first-class kelly bar which can be compared favorably with the imported ones.

Interlocking Kelly bars are used with piling rigs for drilling in dense sand and gravel and weak to strong rock. The Interlocking Kelly bars manufactured by JTHL can be fully locked by mechanical locking system on each section. Kelly bars can be equipped with specially designed springs or pressure plates for shock absorbing purpose.​

Friction Kelly bars are used with piling rigs for drilling in silt, clay and less dense sand and gravel. The Friction Kelly bars manufactured by JTHL are un-lockable with drive keys on each section. Kelly bars can be equipped with specially designed springs or pressure plates for shock absorbing purpose. Please see below chart of some of our standard productions for Friction kelly bars.

JTHL Kelly Bar Feature：

Sections: 3/4/5/6.    Materials: 1--3 sections in 35CrMo,   3--6 sections in 27SiMn under thermal refining treatment. 

1,  35 patents in Kelly bar design & producing technology field.

2, 14 years professional experienced manufacturer in producing rotary drilling rig kelly bar.

3, High quality alloy seamless steel pile in 35CrMo/27SiMn under thermal refining heat treatment.

4, Ready stock kelly bar in standard dimension for all brand rotary drilling rig, in case of hurry order.

5, One year warranty time to prove kelly bar high quality !

6, Factory directly price !

JTHL was founded in 2003 year which specialized in producing Kelly bar & Spare parts & Used drilling rig. It's located in Beijing that the capital of China, meanwhile the branch factory located in the Shandong province, China.​

Till now JTHL have granted 35 patents in Kelly bar design & producing technology field. Especially the Combined lock type Kelly bar which combined the Bauer normal lock type and the changed IMT lock type( patent No. ZL 2012 2 0161611.0). It's successfully applied to the complicted strong rock soil layer which get high praise from domestic and overseas.​

Expect the standard dimension Kelly bar for Bauer, Soilmec, Mait, IMT, Casagrande, Liebherr, Sany, XCMG, Zoomlion, CSR/TEG, Sunward, Lovol, Foton, CMV, Jintai, etc., We factory also accept producing kelly bar as customers special dimension or drawing.​

JTHL highly focuses on international cooperation and communication. Till now, our products have been exported to many countries and regions such as Germany, Singapore, Greece, Russia, Turkey, the Middle East and South America, UK, Brazil, Vietnam, Myanmar, Indonesia, Malaysia, Pakistan etc.​

We sincerely welcome to start win-win  long cooperation with your esteemed company !  Meanwhile, Any professional agent or distributor is warmly welcomed !