Guided Wave Inspection (GUI/LRUT) is a low-frequency ultrasonic wave technique developed for surveying pipe at an accelerated rate to identify potential internal and external corrosion.


  • Long runs of piping in pipe/sleeper racks
  • Soil-to-air interfaces
  • Underground piping/cased piping/earth dike crossings
  • Point contact corrosion
  • Retro PMI projects (detecting welds under insulation)
  • Limited-access piping (overhead lines)
  • CUI Inspection
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