| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 20490-2023 | English | 264 |
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Non-destructive testing(NDT) methods of steel tubes - Automated ultrasonic testing of seamless and welded steel tubes for the detection of laminar imperfections
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GB/T 20490-2023
| Valid |
GB/T 20490-2023
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