KS B ISO 12715-2018 Non-destructive testing — Ultrasonic testing — Reference blocks and test procedures for the characterization of contact probe sound beams
2018KS B ISO 12715:2018 Non-destructive testing — Ultrasonic testing — Reference blocks and test procedures for the characterization of contact probe sound beams
2008KS B ISO 12715:2008 Ultrasonic non-destructive testing-Reference blocks and test procedures for the characterization of contact search unit beam profiles