■ Introduction

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. Interlocking Kelly bars are used with piling rigs for drilling in dense sand and gravel and weak to strong rock. Kelly bars can be equipped with specially designed springs or pressure plates for shock absorbing purpose.

■ Why Choose Drilltop’s Kelly Bars?

1. No Slippage, Maximum Torque Output:

Thanks to the multi-point mechanical interlocking system, torque is transmitted directly without energy loss — delivering maximum drilling force even in hard rock formations.

2. Built for Extreme Torque & Deep Drilling:

Engineered to withstand extreme torsional loads, ensuring stable performance in deep foundation projects and demanding ground conditions like rock and dense sand.

3. Stable Performance in Hard Ground Conditions

Our interlocking design maintains efficiency in abrasive and high-resistance formations, ensuring consistent drilling progress.

4. Reinforced Structure for Higher Reliability

The advanced 6-key structural design improves load distribution and overall stability, reducing stress concentration during high-torque operations.

5. Extended Service Life Under Heavy Wear

Heat-treated drive keys and premium seamless alloy steel significantly enhance wear resistance and fatigue strength, ensuring longer service life under impact and abrasion.

6. Smooth Operation, Less Vibration

Precision telescopic alignment with strict tolerance control ensures smooth extension and retraction, reducing vibration and improving drilling accuracy.

7. Customized Kelly Bar for your Rotary Drilling Rigs

Perfect for Bauer, Soilmec, Liebherr, Sany, Sunward and so on.

8. Provide One-year Warranty