Hydril CS®, PH-6™, PH-4™

Available in Sizes from 3/4" to 7"

Key Achievement

These leading two-step connections have been proven by generations worldwide for their durability in production tubing and work string applications, with makeup so easy that the pipe almost “runs itself.”


  • Production tubing
  • Work strings
  • Drilling cement
  • Milling
  • Fishing
  • High-pressure drill stem testing

Key Features/Benefits

  • Two-step, noninterference thread for trouble-free makeup
  • 100% pipe body tension strength
  • 100% metal-to-metal internal pressure seal
  • 100% external pressure seal
  • Special clearance OD retains 100% tension and pressure ratings
  • Superior galling resistance for chromium strings
  • High torque strength provided by 30° reverse-angle shoulder
  • Suitable for H2S service
  • Corrosion-barrier (CB) ring optional