20 صفحه pdf
ISO 23279:2010
Non-destructive testing of welds-Ultrasonic testing-Characterization of indications in welds
ISO 23279:2010-Non-destructive testing of welds-Ultrasonic testing-Characterization of indications in welds
20 صفحه pdf
ISO 23279:2010
Non-destructive testing of welds-Ultrasonic testing-Characterization of indications in welds