Guizhou Viton Industrial Co., Ltd
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Drilling Machines

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  • Drill Collar, Drill Collars, Drilling String

    Drill Collar is mainly used to provide bit weight to drill bit so that drill pipe is in tension. Especially drill collar can keep drill bit centralized and hole track by large rigidity
    Drill Col...

    Main category: Drilling Machines
    Last Online Date: 12/05/2012 Last Update Date: 12/06/2012