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| International Standard Category: Iron and steel pipes |
GB 9948-1988 Seamless steel tubes for petroleum cracking
石油裂化用无缝钢管 ;
| Category No.: | 23.040.10 | Valid Status: | abolished |
| Issued Organization: | CSBTS | Issued Date: | 1988-09-20 |
| Implemented Date: | 1990-1-1 | Abolished Date: | 2007-01-01 |
| Superseded Standard.: | GB 9948-2006 Seamless steel tubes for petroleum cracking |
Superseded Date: | 2007-1-1 |
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