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Any question about kelly bar ,please email sales@sunrise-petroleum.com , you will get replay within 12 hours!

What is a Kelly Bar?

The Kelly bar is a crucial component in the process of borehole drilling, particularly when using hydraulic rotary drilling rigs. Also referred to as grief joints, kelly joints, or kelly stems, the Kelly bar plays a vital role in connecting the drill column to the drill bit and transferring the necessary torque for effective drilling.

The Kelly bar is hollow and attaches to the top of the drill column, forming a secure connection between the drill bit and the drill rig. This connection allows for the transmission of torque from the drill rig to the drill bit, which is essential for breaking the ground and advancing the borehole.

The Kelly bar is specifically designed to withstand the rigorous demands of drilling operations. It is made of high-quality material to ensure durability and reliability, even under extreme conditions. The hollow design of the Kelly bar also allows for the passage of drilling fluid, which is pumped down the drill column to lubricate and cool the drill bit as well as to remove cuttings from the borehole.

During the drilling process, the Kelly bar transmits torque from the drill rig to the drill bit, enabling the rotation and penetration of the borehole. As the drill bit cuts into the ground, the Kelly bar rotates within the drill column, ensuring that torque is efficiently transferred to the drill bit. This allows for more efficient and controlled drilling, resulting in faster penetration rates and improved overall drilling performance.

The Kelly bar is an essential component of any drilling operation, whether it's for mining, construction, or any other application that requires borehole drilling. Its design and durability make it a reliable choice for a wide range of drilling applications, ensuring efficient and effective drilling operations.

In conclusion, the Kelly bar is a crucial component of borehole drilling operations. It transmits torque from the drill rig to the drill bit, enabling penetration into the ground. The hollow design allows for the passage of drilling fluid, which lubricates and cools the drill bit as well as removes cuttings from the borehole. The durability and reliability of the Kelly bar ensure efficient and effective drilling operations, making it an essential tool for any drilling application.


Contact kelly bar  suppliers

China is one of the most important supply bases in the global petroleum equipment industry chain. If you are looking for kelly bar manufacturers and suppliers of related products, we will provide the latest inquiry and quotation, and contact us. 
email :  sales@sunrise-petroleum.com. You will receive a response within 12 hours. 



Sunrise Petro was restructured in October 2007. The company is an integrated petroleum machinery enterprise that focuses on the development and manufacture of oil drill and production machinery and Class I and II pressure vessels. In the meantime, the company also undertakes technical services such as installation as well as examination and maintenance of various petroleum engineering devices. Sunrise Petro covers a land area of 630,000 square meters, in which there are 180,000 square meters of building area. There are 23 subordinate production and operation units, more than 1,000 facilities of various kinds, and more than 1,500 employees. At present, the company has 2 chief technicians, 9 experts in various fields, 67 technicians, and 127 engineers at intermediate and senior levels. 

To obtain kelly bar  price list for free, please contact us .  Your Premier. kelly bar  Manufacturers and Suppliers in China... 

Any question about petroleum equipment , 
email :  sales@sunrise-petroleum.com. You will receive a response within 12 hours. 



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