BS EN 10307:2001(2002) Non-destructive testing - Ultrasonic testing of austenitic and austentitic-ferritic stainless steels flat products of thickness equal to or greater than 6 mm (reflection method)
2002BS EN 10307:2002 Non-destructive testing - Ultrasonic testing of austenitic and austentitic-ferritic stainless steels flat products of thickness equal to or greater than 6 mm (reflection method)
2002BS EN 10307:2001 Non-destructive testing. Ultrasonic testing of austenitic and austentitic-ferritic stainless steels flat products of thickness equal to or greater than 6 mm (reflection method)