NDT Global - Halfwave (copyright by NDT Global) NDT Global, the leading supplier of ultrasonic pipeline inspection, acoustic resonance technology (art) and advanced data analytics, a state-of-the-art inspection fleet providing the entire inline service inspection spectrum for oil and gas pipelines, has announced the integration of Halfwave Integration Services from Bergen, Norway into the NDT Global business. Halfwave is the owner of proprietary Acoustic Resonance Technology (ART), an ultrasound based technique which allows high-precision measurements in imperfect conditions and without the need for liquid couplant. The ART technique allows NDT Global to officially enter the in-service gas pipeline segment and present a competitive alternative to MFL and EMAT testing. Halfwave AS was acquired by NDT Global's parent in February of last year.