SIS SS-ISO 6621-4-1991 内燃机．活塞环．第4部分：一般规范

标准号：SIS SS-ISO 6621-4-1991
中文标准名称：内燃机．活塞环．第4部分：一般规范
英文标准名称：Internal combustion engines — Piston rings — Part 4: General specifications
发布日期：1991/6/5 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This part of ISO 6621 lays down the general characteristics of piston rings, individual dimensional criteria of which are specified as appropriate in the International Standards and Technical Reports cited in clause 0.This part of ISO 6621 also provides a system for coding, designation and marking of the piston rings.The requirements of this International Standard apply to all rings up to and including 200 mm diameter covered by the above classification for both reciprocating internal combustion engines and compressors.