91/2" HS652XA corps en acier Pdc foret d'eau bien Hard Rock et le forage de pierre dure
foret de perçage du hard rock, Pierre forage bits, foret de pdc, foret de diamant
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Sumur minyak Drill bit / baja tubuh PDC bit / PDC Rock Drill bit PDC Blades Drill Bit pasokan bit PDC pabrik pasokan berkualitas tinggi berlian PDC... |
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