ISO 6624-4:2016現行
Internal combustion engines - Piston rings Part 4: Half keystone rings made of steel
出版：International Organization for Standardization
專家解讀視頻
Defines the essential dimensional features of half keystone rings made of steel, types HK, HKB and HKBA, having nominal diameters from 50 mm up to, and including, 160 mm, used in reciprocating internal combustion piston engines for road vehicles and other applications.
BS ISO 6624-4 : 2016 - Identical
BS ISO 6624-4 : 2016 - Identical
NBR ISO 6624-4 : 2010 - Identical
NEN ISO 6624-4 : 2005 - Identical
SAC GB/T 1149-12 : 2013 - Identical
