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20224 Customized Bauerr Soilmecc Liebherrr Sanyy frictional&Inter-locking Kelly Bar For Rotary Drilling Rig

• Manufacturer: Kelly

I nterlock Kelly bar adopts the international advanced six-ribs distribution technology.This type Kelly barconsists of telescopic tubular sections with a system of multy-step drive keys and lock recesses,welded o...