Non-destructive testing - Ultrasonic testing - Specification for step wedge calibration block (ISO 16946:2015); German version EN ISO 16946:2015— 10 стр.
Non-destructive testing - Ultrasonic testing - Specification for step wedge calibration block (ISO 16946:2017); German version EN ISO 16946:2017— 11 стр.
BS EN 17290. Non-destructive testing. Ultrasonic testing. Examination for loss of thickness due to erosion and/or corrosion using the TOFD technique— 27 стр.