ISO 6621-5:2005被替代
Internal combustion engines - Piston rings Part 5: Quality requirements
出版：International Organization for Standardization
专家解读视频
SS ISO 6621-5 Ed. 1 (1991) - Identical
JIS B 8032-5:1998 - Identical
GB/T 1149.4-2008 - Identical
UNE 26417-5:1994 - Identical
DIN ISO 6621-5 (1990-06) - Identical
KS R ISO 6621-5:2009 - Identical
NF ISO 6621-5:1989 - Identical
BS 5341-6.5:1992 - Equivalent
BS ISO 6621-5:2005 - Identical
UNI ISO 6621-5:1992 - Identical
NEN ISO 6621-5:2005 - Identical
SS ISO 6621-5 Ed. 2 (2007) - Identical
