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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 40332-2021 |
Non-destructive testing—Ultrasonic testing—Characterization and verification of ultrasonic thickness measuring equipment 无损检测 超声检测 超声测厚仪性能特征和测试方法 |
China National Standards testing—Characterization |
 English PDF |
| GB/T 39239-2020 |
Non-destructive testing—Ultrasonic testing—Characterization and sizing of discontinuities 无损检测 超声检测 不连续的特征和定量 |
China National Standards testing—Characterization |
English PDF |
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