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| International Standard Category: Gas pressure vessels, gas cylinders |
HG 20652-1998 Specification of columns design
塔器设计技术规定 ;
| Category No.: | 23.020.30 | Valid Status: | valid |
| Issued Organization: | 国家石油和化学工业局 | Issued Date: | 1998-11-18 |
| Implemented Date: | 1999-3-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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