This section specifies the testing methods and testing instruments used in testing finished countersinking products. These methods are not exclusive. This section is applicable to the testing of various countersinks produced according to GB/T 1143, GB/T 4258~GB/T 4266.
JB/T 10231.10-2002 history
2017JB/T 10231.10-2017 Tool product testing methods Part 10: Countersinking