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wireline drilling PQ HQ NQ BQ Surface Set Diamond Core Drilling Bits2017-03-10 12:02:02 |
NQ3 and HQ3 Wireline drilling Surface Set Diamond Core Drilling Bits2017-03-10 12:02:02 |
NMLC Impregnated dry diamond core bit 6 inch for hard rock2017-03-10 12:02:02 |
Tapered and Thread Rock Drilling Button Bit2017-05-16 09:56:30 |
rock drilling tools 32mm-38mm taper button bits2017-05-17 10:59:03 |