This Part of EN 10246 specifies requirements for the ultrasonic testing of strip/ plate used in the manufacture of welded tubes for the detection of laminar imperfections. The standard specifies acceptance levels and calibration procedures. NOTE 1: In the case of welded tube, an alternative ultrasonic testing specification for the detection of laminar imperfections is available which may be applied at the manufacturer' s option by ultrasonic testing of the tube subsequent to seam welding in accordance with EN 10246-14.