ultrasonic probe, ultrasonic testing equipment, ultrasonic testing method, and seamless pipe or tube manufacturing method

摘要

ULTRASONIC PROBE, ULTRASONIC TEST EQUIPMENT, ULTRASONIC TEST METHOD, AND CUT OR PIPE MANUFACTURING METHOD. The present invention relates to an ultrasonic testing method according to the invention, which includes the steps of arranging an ultrasonic probe 1 having several transducers 11 to face a tubular test object P, and causing transducers appropriately selected from the various transducers to transmit and receive ultrasonic waves so that ultrasonic waves are propagated on the tubular test object in various different propagation directions, where an ultrasonic test condition by the probe Ultrasonic waveforms are established so that the respective external refractive angles Or of the ultrasonic waves in the various propagation directions are approximately equivalent and / or the respective internal refraction angles 0k of the ultrasonic waves in the various propagation directions are approximately equivalent.