GB/T 38980-2020 English PDF (GBT38980-2020)

This Standard specifies the replication and microscopic measurement method of the sizes of artificial defects (artificial grooves / through holes) of comparison specimens for the flaw detection of zirconium tubes. This Standard is applicable to the measurement of the sizes of artificial grooves / through holes on the comparison specimens for the non-destructive testing of zirconium tube ultrasound and eddy current, etc. The measurement of the sizes of similar artificial defects on other metal comparison specimens may take this as a reference.