Non-destructive testing of steel tubes. Automated full peripheral ultrasonic thickness testing of seamless & welded (except submerged arc-welded) steel tubes Non-destructive testing, Steels, Pipes, Seamless pipes, Seamed pipes, Welded joints, Automatic, Ultrasonic testing, Thickness measurement, Grades (quality), Approval testing, Acceptance (approval), Test equipment, Control samples, Calibration