- mock tool joint
- 假: false; fake; sham; phoney; a ...
- 钻杆: bull rod; bar; rod; drill st ...
- 接头: connect; join; joint
- 方钻杆接头: kelly bar sub; kelly joint
- 钻杆接头: drill pipe joint; drill pipe sub drill adopter; drill pipe tool joint; drillrodsu; rod coupling; tool joint
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