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| International Standard Category: Flanges, couplings and joints |
HG 20601-1997 Steel pipe blank flanges (Europe System)
钢制管法兰盖(欧洲体系) ;
| Category No.: | 23.040.60 | Valid Status: | superseded |
| Issued Organization: | Ministry of Chemical Industry | Issued Date: | 1997-11-27 |
| Implemented Date: | 1998-2-1 | Abolished Date: | |
| Superseded Standard.: | HG/T 20592~20635-2009 Steel pipe flanges,gaskets and bolting HGJ 44-76-91 HG/T 20592-20635-2009 |
Superseded Date: | 2009-7-1 |
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