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At TesTex, we know your turnaround depends on our turnaround.

Technology Application
LFET RFET BFET ECT Ultrasound OSET Support

TesTex uses a variety of state-of-the-art electromagnetic techniques to scan for defects in both ferrous and nonferrous materials and structures.


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LFET RFET BFET ECT Ultrasound OSET Support
Boiler Tubes AGS Tanks Pipelines Feedwater Heaters Heat Exchangers Finned Tubes Condensers Welds
Radio Field Electromagnetic Technique Triton RFET
Balance Field Electromagnetic Technique Triton BFET
Off Surface Electromagnetic Technique OSET - Scout
Ultrasonic Inspection Helix XT IRIS Echo 20/20

This is a great place to check out Technical papers, Case Studies, Videos and Testimonials related to our specialized non-destructive testing products and services.

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Heat Exchanger Inspection

Fin Fan NDT Inspection

TesTex provides scheduled and emergency inspection services for all types of tubular heat exchangers including air cooler fins and fans. Unlike most other NDT companies, heat exchanger inspection is a TesTex specialty; we build the equipment used for inspections, and all of our crews are trained on it. When you contact us with an immediate need, one of our 40 highly-trained field service crews will respond.

3D Tubesheet Map
3-D tubesheet map of a heat exchanger.

For carbon steel and other magnetic metals, the TesTex Eagle 2000 RFET System is deployed. It performs inspections from the ID.

RFET Waveform
Waveform shows an example of localized wall loss.

For non-magnetic metals such as stainless steels, copper nickels, brass, titanium, the TesTex TX 4400 Multi-frequency/Multichannel Eddy Current System is deployed.

Because TesTex manufactures its own RFET and ECT equipment, we have the necessary test equipment available for large jobs, and each inspection team is supplied with sufficient back-up/redundant equipment to keep the work going. Because we also manufacture all of our own probes and calibration standards, we can respond to emergency needs better than any other heat exchanger inspection company.

Heat Exchanger Report
Example of inspection and tube test summary on a report.

In addition to the inspections based on our REFT and ECT equipment, we also provide IRIS Ultrasonic tube inspection and video borescoping services.

Whether you have one heat exchanger or several hundred, we have the capabilities to perform an inspection.

  • Inspects straight sections; U-Bends can be tested with special probes
  • A team can inspect 300 – 400+ hex tubes in a ten-hour shift using RFET
  • A team can inspect 400+ hex tubes in a ten-hour shift using ECT
  • TesTex can field 40+ tubing inspection crews at any given time
  • Our technicians are equipped with multiple probe sizes and back-up equipment
  • RFET inspections do not require extensive tube cleaning and often are conducted with no tube preparation at all
  • Can inspect tube sizes from one-half inch (OD) and greater
  • Detects and sizes corrosion, erosion, pitting and baffle cutting

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