BSI Standards PublicationInternal combustion engines — Piston rings — Expander/rail oil-control ringsBS ISO 6627:20...
![BS ISO 6627-2022--[2022-04-15--09-17-45 PM].pdf](https://fanrenwk-1251972103.cos.ap-hongkong.myqcloud.com/convert/202512/03/138802/thumb-P1-b9b0adb4-b153-4b14-a334-b5b3f5f9b9a1-320x453.webp)
