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Chinese National Standard Category: Air intake/exhaust system

English Title: Internal combustion engines-Intake and exhaust valves-Part 4:Friction welding valves—Ultrasonic testing
Chinese Title: 内燃机 进、排气门 第4部分:摩擦焊气门 超声波探伤
Standard No.: JB/T 6012.4-2008
Category No.: J93
Issued by: NDRC
Issued on: 2008-6-4
Implemented on: 2008-11-1
Status: valid
Superseded by:
Superseded on:
Abolished on:
Superseding:JB/T 5093-1991
Word Count:4000 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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