Guided wave inspection companies provide fast and reliable inspections, identifying cracks and corrosion damage specifically in unpiggable pipelines, suspended or supported pipeline systems. The correct ultrasonic wave mode is used for specific scans applications.

GUL technique uses a collar with multiple probes wrapped around a pipe or vessel. Torsional and longitudinal waves inspect large sections of pipe and produce individual scans.

Guided wave inspection companies analyze the scans to indicate girth welds, cracks, and corrosion from fixed reference points.