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Company Details
  • ROTATE DRILLING MOTOR CO., LTD

  •  [Jiangsu,China]
  • Business Type:Manufacturer
  • Main Mark: Americas , Middle East , Asia , East Europe
  • Exporter:91% - 100%
  • Certs:ISO9001, API
  • Description:Top Sub,Steel Top Section,Truss Top Section,Top Section For Aluminum
ROTATE DRILLING MOTOR CO., LTD

ROTATE DRILLING MOTOR CO., LTD

Top Sub,Steel Top Section,Truss Top Section,Top Section For Aluminum

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Product categories of Sub, we are specialized manufacturers from China, Top Sub, Steel Top Section suppliers/factory, wholesale high-quality products of Truss Top Section R & D and manufacturing, we have the perfect after-sales service and technical support. Look forward to your cooperation!
Top Sub
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Float Valve
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Crossover Sub
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Float Sub
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Sub
China Sub Suppliers

A Top Sub, or Crossover Sub as it is sometimes called, is used to attach the motor to the drill-string.

The crossover Sub typically has a standard API box connection that connects to the drill-string and a proprietary pin connection that connects to the motor.

Top subs may also be designed with a float bore for those applications that may require Float Valve.

Optionally, a dump valve sub can be used in place of the top sub.

The dump valve sub has the same function as a top sub, but instead contains an internal bypass valve that enables the fluid in the drill-string to drain out when the string is pulled out of the hole.

top sub

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