Roller Cone BitsA roller cone bit is a rotary drilling tool characterized by three rotating cones equipped with hardened steel teeth or tungsten carbide inserts. These cones rotate independently on ...もっと見る
訪問者のメッセージメッセージを残してください.
まだ公のコメントはない
TCI Tricone Roller Drill Bit Rubber Sealed Bearing Systems Water Well Drill Bit For Sale