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| Chinese National Standard Category: Air intake/exhaust system |
| English Title: | Metallographic test for valve seat of internal combustion engines |
| Chinese Title: | 内燃机 气门座 金相检验 |
| Standard No.: | JB/T 8893-1999 |
| Category No.: | J93 |
| Issued by: | State Bureau of Machine Building Industry |
| Issued on: | 1999-09-17 |
| Implemented on: | 2000-1-1 |
| Status: | superseded |
| Superseded by: | JB/T 9769.2-2010 Internal combustion engins-Cast iron valve seat inserts-Part 2:Metallographic inspections |
| Superseded on: | 2010-7-1 |
| Abolished on: | |
| Superseding: | |
| Word Count: | 13000 words |
| Similar Standards: | GB 2784-1981 GB/T 23337-2023 GB/T 41161-2022 GB/T 33928-2017 GB/T 1859.4-2017 GB/T 1859.1-2015 GB/T 1859.3-2015 JB/T 11880.4-2014 JB/T 11880.5-2014 JB/T 12084-2014 JB/T 5137-2014 JB/T 11880.6-2014 JB/T 11880.7-2014 JB/T 11880.2-2014 JB/T 12083-2014 JB/T 11880.3-2014 JB/T 11880.1-2014 JB/T 11789-2014 JB/T 11788.1-2014 JB/T 8415-2011 |
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