Non-destructive testing of steel tubes. Automated ultrasonic testing for the detection of laminar imperfections in strip/plate used for the manufacture of welded steel tubes Non-destructive testing, Steels, Pipes, Seamed pipes, Welded joints, Strips, Sheet materials, Automatic, Ultrasonic testing, Flaw detection, Grades (quality), Approval testing, Acceptance (approval), Test equipment, Control samples, Calibration