Product details
HEBEI CROSSING DRILL BIT MANUFACTURE
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Product description
400mm Hole opener/Rock Reamer
Thead:4 1/2 reg pin
IADC code:637
Cone size:8 1/2inch(each cone size13.5cm)
Cutter Number :4pcs
More sizes for the hole openers can be manufacturered .
Application: for water well drilling,enlarge holes,construction .
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HEBEI CROSSING DRILL BIT MANUFACTURE