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Standard Insuued on: 2007-03 |
Category No.: | YB | Valid Status: | superseded |
Issued Organization: | NDRC | Issued Date: | 2007-03-06 |
Implemented Date: | 2007-9-1 | Abolished Date: | |
Superseded Standard.: | YB/T 5137-2018 Hot rolled and wrought round blank for high-pressure seamless steel tube |
Superseded Date: | 2018-7-1 |
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