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Standard Insuued on: 2004-06 |
Category No.: | YB | Valid Status: | superseded |
Issued Organization: | 冶金工业信息标准研究院 | Issued Date: | 2004-06-17 |
Implemented Date: | 2004-6-17 | Abolished Date: | |
Superseded Standard.: | YB/T 5222-2014 Quality hot rolled and forged carbon structural steel round tube blank YB/T 4149-2006 Continuously cast ruond billet for seamless steel tube rolling |
Superseded Date: | 2006-11-1 |
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