UNE-EN 4050-3:2012 Aerospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock and forgings - Part 3: Reference blocks (Endorsed by AENOR in November of 2012.)
2012UNE-EN 4050-3:2012 Aerospace series - Test method for metallic materials - Ultrasonic inspection of bars, plates, forging stock and forgings - Part 3: Reference blocks (Endorsed by AENOR in November of 2012.)