This standard specifies the ultrasonic testing methods and quality classification of intake and exhaust valves. This standard applies to intake and exhaust valves with engine bores below 200mm, and also applies to motorcycle engine valves.
JB/T 10555-2006 history
2013JB/T 10555-2013 Nondestructive testing.Ultrasonic testing of aivs
2006JB/T 10555-2006 Nondesturctive testing.Ultrasonic testing of aivs