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


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

LFET Products

Low Frequency Electromagnetic Technique (LFET) products are used to inspect storage tanks, other convex or concave ferrous surfaces, as well as nonferrous metal tubing/piping surfaces.

RFET Products

Remote Field Electromagnetic Technique (RFET) products are used to quickly and accurately inspect ferrous tubing found in heat exchangers and drum-to-drum boiler generating banks.

BFET Products

Balance Field Electromagnetic Technique (BFET) products are used to detect surface and sub-surface cracking in welds and base metals.

ECT Products

Eddy Current Technique (ECT) is used to quickly and accurately inspect non-ferrous metal tubing from the tube internal dimension (ID).


TesTex has enhanced ultrasonic (UT) inspection for many different applications, including tank shells, UT prove-ups, finned tubes and waterwalls.


TesTex produces standard and custom probes (and calibration tubes) for all of its ID (internal dimension) inspection equipment.


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

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Corrosion Fatigue Cracking Inspections at OVEC

Corrosion Fatigue Cracking Probe

The Balanced Field Electromagnetic Technique (BFET) can detect corrosion fatigue cracking by sending an electromagnetic signal into the metal. A detector coil measures any change in the signal and can size cracking within 10% accuracy through the use of calibration standards. TesTex has developed and customized a rotating BFET probe for sizing corrosion fatigue cracking. This probe is able to travel through bends for boiler tubes with a inside tube diameter of 2″ or greater.


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