... of the whole machine. The main purpose of kelly bar is to transfer the torque of rotary ... home and abroad, we can produce first-class kelly bar which can be compared favorably with the ... imported ones . We can also provide kelly bar for BAUER, MAIT, IMT, SOILMEC, CASAGRANDE and ... other foreign brands rotary drilling rig. rig Kelly BarTypeO.Dia.(MM)SectionDepth(m)Torque(KN.M)DZ12 ...