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    DRILL COLLAR

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      • Commodity name: DRILL COLLAR

      In drilling, a drill collar consists of a heavy pipe above the drill bit in a drill string.

      In drilling, a drill collar consists of a heavy pipe above the drill bit in a drill string.

      Remarks：Length is from 10’ to 31’. API Spec7-1, AISI 4145H Alloy Steel or non-magnetic material.

       

       

       

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