DTH Hammer,DTH Bit,Casing drilling system direct from CN
Fast Penetration High Productivity Dth Hammer MISSION80 216~219mm Dth Bit For Rock Drilling. 498.00 - 532.00 Piece. 1 Piece (Min. Order) ... China Good Quality Down The Hole Dth Hammer Drill Button Bit With CIR110-110mm Series For Well Drilling,Quarrying high quality d. 67.50 ...
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