Drill Collar

  • High quality, and unique selection.
  • Special intermediate frequency heat treatment technique.
  • UT&MT inspection.
  • Strict quality control system.
  • Slick drill collar, and spiral drill collar provided up to clients option.
  • Conforms API Spec7-1 requests
  • ‚ÄčAll ranges and kinds of spiral drill collars available. The connection, tolerance of OD and ID, verticality, mechanical properties and chemical component of steel meet the requirement of API Spec 7-1 and SY5144 standard.
Product Specifications

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