Internal combustion engines—Piston rings—Part 4:Quality requirements

Standard published on 9.3.2021

Internal combustion engines - Piston rings - Part 5: Inspection measuring principles

Standard published on 11.8.2008

Internal combustion engines—Piston rings—Part 6: Scraper rings made of cast iron

Standard published on 9.3.2021

Internal combustion engines - Piston rings - Part 7: Rectangular rings made of cast iron

Standard published on 10.11.2010

Internal combustion engines—Piston rings—Part 8: Rectangular rings made of steel

Standard published on 12.10.2022

Internal combustion engines - Piston rings - Part 9: Keystone rings made of cast iron

Standard published on 11.8.2008

Dimensions of base for color picture tubes

Standard published on 30.12.2011

Semiconductor devices—Integrated circuits—Part 21Sectional specification for film integrated circuits and hybrid film integrated circuits on the basis of the qualification approval procedures

Standard published on 28.12.2018

Letter symbols for discrete semiconductor devices

Standard published on 5.11.2001

Letter symbols for discrete semiconductor devices
Execute Date: october 2026

Standard published on 31.3.2026