TREA

using a wrench adapted to engage a non circular section of pipe

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Industry

  • CPC
  • E21B19/167
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21BEARTH DRILLING E21B19/00Handling rods, casings, tubes or the like outside the borehole

Current Industry

E21B19/167using a wrench adapted to engage a non circular section of pipe
Industries