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

Internal combustion engines — Piston rings — Part 4: General specifications

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标准号

SIS SS-ISO 6621-4:1991

发布

1991年

发布单位

SE-SIS

 

 

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.

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