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    External Flush Drilling Rod

    External flush drilling rod is used for percussion-rotary drilling with down-the-hole (DTH) hammer (including hydro-hammer and pneumatic-hammer). High rigidity, good sealing ability and uniform outer diameter are structure feature of external flush rod, therefore, it has advantages of low rotary torque and resistance.

    Main dimensions as follows: Diameter(mm)×length(m)
    Φ50×1.0, Φ50×1.5, Φ73×1.0, Φ73×1.5, Φ89×1.0, Φ89×1.5, Φ114×1.0, Φ114×1.5
    Special specifications can be manufactured according to customer's requirements.

     
     

     

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