Wedge 521™


  • 100% pipe body internal yield and collapse strength created with the lubricant seal of the dovetail threads.
  • High compression rating provided by the reverse angle stab flank of the dovetail threads makes the Wedge 521™ suitable for more severe compression applications. Compression rating is typically 80–89% of the pipe body, and is usually higher than the tension rating.
  • Excellent for large diameter pipe, the dovetail thread eliminates thread pull-out, even on thin wall pipe.


  • Surface casing
  • Intermediate casing
  • Drilling with casing
  • Liners
  • Horizontal and extended reach wells
  • Thermal wells
  • HP/HT and deep wells


  • Dopeless®