| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 23902-2009 | English | 799 |
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Days<=4
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Non-destructive testing -- Ultrasonic examination -- Time-of-flight diffraction technique as a method for detection and sizing of discontinuities
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GB/T 23902-2009
| Obsolete |
GB/T 23902-2009
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