ISO 6621-5:2013现行
Internal combustion engines - Piston rings Part 5: Quality requirements
出版：International Organization for Standardization
专家解读视频
This part of ISO 6621 specifies those quality aspects that are capable of definition but not normally found on a drawing specification.
KS R ISO 6621-5:2014 - Identical
NBR ISO 6621-5 : 2014 - Identical
BS ISO 6621-5 : 2013 - Identical
BS ISO 6621-5 : 2013 - Identical
NBR ISO 6621-5 : 2014 - Identical
NEN ISO 6621-5 : 2005 - Identical
NF ISO 6621-5 : 1989 - Identical
DIN ISO 6621-5 : 1990 - Identical
UNI ISO 6621-5 : 1992 - Identical
