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| Chinese National Standard Category: Machine tool element |
| English Title: | Vertical fine boring machine Boring head Technical conditions |
| Chinese Title: | 立式精镗床 镗头 技术条件 |
| Standard No.: | JB/T 9901.2-1999 |
| Category No.: | J51 |
| Issued by: | National Technical Committee on Standardization of Metal-cutting Machine Tools |
| Issued on: | 1999-05-20 |
| Implemented on: | 2000-1-1 |
| Status: | superseded |
| Superseded by: | JB/T 4289.5-2014 Vertical Fine Boring Machine - Part 5: Boring Head |
| Superseded on: | 2014-10-1 |
| Abolished on: | |
| Superseding: | ZBn J51003.2-1988 |
| Word Count: | 2500 words |
| Similar Standards: | T/CCMA 0055-2017 JB/T 7175.1-1993 JB/T 9942-1999 GB/T 40310.1-2021 GB/T 40310.2-2021 GB/T 39983-2021 GB/T 39829-2021 GB/T 39954-2021 GB/T 39961-2021 JB/T 8651.2-2011 JB/T 8651.3-2011 JB/T 7175.1-2011 JB/T 8651.1-2011 JB/T 3162-2011 JB/T 8651.4-2011 GB/T 25379.1-2010 GB/T 25379.2-2010 GB/T 25377-2010 GB/T 23568.1-2009 GB/T 17587.5-2008 |
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