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gravity bar

A 5 ft (1.5 m) length of heavy half-round rod forming the link between the wedgeorienting coupling and the drill-rod swivel coupling on an assembled Thompson retrievable borehole-deflecting wedge.

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Penulis

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 poin
  • 100% positive feedback
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