Bauer rotary drilling rig Interlocking kelly bar drilling rig parts
Interlocking Kelly Bar:
It is a kind of drill pipe that transits pressure between layers of drill pipe through the locking block when the rotary drilling rig is drilling. The special heat treatment which make this style kelly bar with high abrasion resistance,compression rresistance and excellent welding properity. The friction rod has the characteristics of simple operation and large drilling depth.It is mainly suitable for soft formation construction.
