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Patent
  • Manual Ball Screw Flat Valve

  • Simple tool for measuring symmetry of valve body

  • Positioning welding frame

  • Pressure limiting protection device for well site process pipeline

  • Bearing Removal Tool

  • Universal Assembly Seat Tool

  • Seal test device for casing head body

  • Seat sealing device of high pressure valve for oil wellhead

  • Differential pressure multiphase flowmeter