Product Description
Kelly bar/ drill pipe is our advantage products, We can  provide kelly bar for BAUER, MAIT, IMT, SOILMEC, CASAGRANDE and other foreign brands rotary drilling rig.

 
Type as below: 355/377/406/445/470/508/558

Specifications
1.high quality and competitive price
2.different type of kelly bar combined and advantage together
3.long time use
Interlocking pressurizing kelly bar is one type adapted to the hard layer.Its structure is that the outer keys is composited of 3 keys or 6 keys,there are usually 3 sets of or N sets of  concave 
pressurizing parts.
The inner keys are composited of 3 or 6 wear-resistant strip. 
This kelly bar has the advantage of passing pressure , anti-torque capacity better, and is used for hard and soft layer. 
Based on the rich manufacturing experience and by absorbing the advanced technology both ant home and abroad, Our products are very popular in worldwide for its high quality and best price. Welcome to inquiry from us.