JTHL all types of rotary drilling interlocking and friction kelly bar

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Beijing Jietaihongli Technology Co., Ltd.

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City: Beijing

Province/State: Beijing

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JTHL all types of rotary drilling interlocking and friction kelly bar

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JTHL all types of rotary drilling interlocking and friction kelly bar

Jietaihongli Kelly Bar kelly bar are especially designed for drill hard materials and when crowd force is required . kelly bar is key components in the execution of boreholes with hydraulic drill rig ...

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