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| Chinese National Standard Category: Chemical machinery and equipment parts |
| English Title: | Welding neck flange manholes with hinged cover |
| Chinese Title: | 回转盖带颈对焊法兰人孔 |
| Standard No.: | HG/T 21518-2014 |
| Category No.: | G91 |
| Issued by: | Ministry of Industry and Information Technology |
| Issued on: | 2014-07-09 |
| Implemented on: | 2014-11-1 |
| Status: | valid |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | |
| Superseding: | HG/T 21518-2005 Welding neck flange manholes with hinged cover |
| Word Count: | 7000 words |
| Similar Standards: | HG/T 21526-2005 HG 21526-1995 JB 586-1979 JB 587-1979 JB 590-1979 JB/T 591-1979 JB 583-1979 JB 584-1979 JB 2556-1979 HG/T 21627-1990 HG/T 21628-1990 JB/T 2555-1979 JB/T 580-1979 JB/T 585-1979 JB/T 582-1979 JB/T 579-1979 JB/T 581-1979 JB/T 2557-1979 JB/T 577-1979 JB/T 592-1979 |
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