Non-destructive inspection of high-pressure lines

A method for non-destructive ultrasound inspection of a high-pressure line as a testing piece by means of a pulse-echo method, wherein the high-pressure line is conveyed to a near-field range of at least one ultrasonic transducer and an ultrasonic pulse is emitted with a perpendicular sound incidence on the high-pressure line in such a way that the high-pressure line is completely captured in its cross section by the near-field sound emission caused by the ultrasonic transducer, and reflected ultrasonic pulse(s) is/are received by the ultrasonic transducer and/or, optionally, further ultrasonic transducers, the associated echo delay times are recorded and, optionally, evaluated,

• wherein, during an evaluation, an echo delay time range until an echo or multiple echo at an external wall of the high-pressure line facing away from the ultrasonic transducer, preferably between an echo on an internal wall closest to the ultrasonic transducer and a third echo on the external wall facing away from the ultrasonic transducer, is subjected to an amplitude evaluation.