OD 133mm MRE Dual Rotors Overburden Casing Drilling Bit CIR110 Shank
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...o the hole when rotated clockwise. Once completed, the reamer bits can be lifted up from the bottom of the hole using a drilling rig after closing counterclockwise. This kind is specifically used for diameters ranging from 89 to 323 mm. Characteristics 1....
Wuhan Kingdrilling Diamond Co.,Ltd
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