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ISO 6613:2023PublishedWindows and doors — Air permeability — Test methodISO 6614:1994PublishedPetroleum products — Determination of water separability of petroleum oils and synthetic fluidsISO 6615:1993PublishedPetroleum products — Determination of carbon residue — Conradson methodISO 6617:1994PublishedPetroleum-based lubricating oils — Aging characteristics — Determination of change in Conradson carbon residue after oxidationISO 6618:1997PublishedPetroleum products and lubricants — Determination of acid or base number — Colour-indicator titration methodISO 6619:1988PublishedPetroleum products and lubricants — Neutralization number — Potentiometric titration methodISO 6621-4:2024PublishedInternal combustion engines — Piston rings — Part 4: General specificationsISO 6621-3:2021PublishedInternal combustion engines — Piston rings — Part 3: Material specificationsISO 6621-5:2020PublishedInternal combustion engines — Piston rings — Part 5: Quality requirementsISO 6621-2:2020PublishedInternal combustion engines — Piston rings — Part 2: Inspection measuring principlesISO 6621-1:2018PublishedInternal combustion engines — Piston rings — Part 1: VocabularyISO 6622-1:2021PublishedInternal combustion engines — Piston rings — Part 1: Rectangular rings made of cast ironISO 6622-2:2013PublishedInternal combustion engines — Piston rings — Part 2: Rectangular rings made of steelISO 6623:2013PublishedInternal combustion engines — Piston rings — Scraper rings made of cast ironISO 6624-1:2017PublishedInternal combustion engines — Piston rings — Part 1: Keystone rings made of cast ironISO 6624-3:2017PublishedInternal combustion engines — Piston rings — Part 3: Keystone rings made of steelISO 6624-2:2016PublishedInternal combustion engines — Piston rings — Part 2: Half keystone rings made of cast ironISO 6624-4:2016PublishedInternal combustion engines — Piston rings — Part 4: Half keystone rings made of steelISO 6625:1986PublishedInternal combustion engines — Piston rings — Oil control ringsISO 6626-1:2024PublishedInternal combustion engines — Piston rings — Part 1: Coil spring loaded oil control rings made of cast ironISO 6626-2:2024PublishedInternal combustion engines — Piston rings — Part 2: Coil-spring-loaded oil control rings of narrow width made of cast ironISO 6626-3:2019PublishedInternal combustion engines — Piston rings — Part 3: Coil-spring-loaded oil control rings made of steelISO 6627:2022PublishedInternal combustion engines — Piston rings — Expander/rail oil-control ringsISO 6629:1981PublishedChromium ores and concentrates — Methods of chemical analysis — General instructionsISO 6630:1986PublishedDocumentation — Bibliographic control characters