Remote Field Testing is used for the inspection of steel pipes and tubes. The technology is based on the use of a probe comprising a single or multiple transmission coils that are positioned at twice the distance of the pipe diameter from the reception coil. RFT is also based on a direct transmission mode allowing for detection of internal and external flaws.

This NDT method is typically used on ferromagnetic tubes of heat exchangers and boilers and is also effective to measure loss of thickness.