| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| DL/T 821-2017 | English | 829 |
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Days<=6
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Radiographic examination and quality classification of welded butt joints in metallic materials
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DL/T 821-2017
| Valid |
DL/T 821-2017
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