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Fingerboard

A rack that supports the stands of pipe being stacked in the derrick or mast. It has several steel fingerlike projections that form a series of slots into which the derrickman can place a stand of drill pipe or collars after it is pulled out of the hole and removed from the drill string.

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  • Harry8L
  • (London, United Kingdom)

  •  (V.I.P) 574128 分数
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