标准摘要
[中文适用范围]： 本部分规定了用于道路车辆和其他应用的往复式内燃机活塞环的半圆环形钢制活塞环的基本尺寸特性。这些活塞环的 nominal diameters 范围从 50 mm 到 160 mm，包括类型 HK、HKB 和 HKBA 活塞环。 [外文原描述]： ISO 6624-4:2016 specifies 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.
英文名称Internal combustion engines — Piston rings — Part 4: Half keystone rings made of steel