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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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Pipe and Pipeline Inspection

NDT Pipeline Inspection

TesTex provides pipeline scanning services for above-ground, uninsulated piping. The piping can be painted or coated and still be scanned. For this service, TesTex utilizes the PS-2000 Pipe Scanning System. This system is based on the principles of the TesTex’ proprietary Low Frequency Electromagnetic Technique (LFET).

The LFET technology allows TesTex to rapidly scan areas of piping to achieve greater than 90% coverage. The PS-2000 can be used as a quantitative tool or as a rapid screening tool. In the screening mode, we use A-Scan Ultrasonics to prove-up any flaw indications. This technology is applicable to magnetic and non-magnetic piping. Cast iron or other cast materials can also be tested.

Pipeline Waveform
Waveform shows pitting found by LFET hand scanning.

For longer pipe runs, TesTex have developed an automated scanning rig known as the LineCat which is based on the principles of the Low Frequency Electromagnetic Technique (LFET). It was designed to quickly and accurately scan piping of 6” or greater diameter. This inspection is performed from the pipe O.D.

LineCat Waveform
Waveform shows pitting found by the TesTex LineCat.

The LineCat uses a remote controlled magnetic wheeled crawler which is used to propel the system making it capable of traveling up to 10 feet per minute. It has a contoured top shell that supports and stabilizes the main sensor array. The sensor array itself, is made up of 16 individual 50mm wide scanning pods that contour to the actual geometry of the pipe via a flexible coupling system. The system is sufficiently designed to travel around bends and over welds. All components of the LineCat are designed to withstand Artic conditions down to -40° Fahrenheit. In addition, the LineCat is shippable via overnight carriers.

Piping Report
Piping diagram showing areas of corrosion.

In nuclear power plants, piping such as service water systems and fire protection systems can be scanned to detect and quantify MIC (microbiologically induced corrosion) attack and even FAC (flow accelerated corrosion)

In coal burning, fossil power plants, coal mill piping can be rapidly scanned for ID erosion from pulverized coal.

For short-run underground piping, TesTex provides inspection services through access to the pipe ID with its Eagle-2000 System, which uses our Remote Field Electromagnetic Technique (RFET) to scan for defects.

Click here to to see our pipeline inspection tools video.


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