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Standard Insuued on: 2006-08 |
Category No.: | YB | Valid Status: | superseded |
Issued Organization: | NDRC | Issued Date: | 2006-8-19 |
Implemented Date: | 2006-12-1 | Abolished Date: | |
Superseded Standard.: | YB/T 4146-2016 High-carbon chromium bearing steel seamless steel tubes |
Superseded Date: | 2017-4-1 |
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