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GSO ISO 6621-4:2025
ISO 6621-4:2024
Gulf Standard
Internal combustion engines — Piston rings — Part 4: General specifications
GSO ISO 18669-2:2025
ISO 18669-2:2025
Gulf Standard
Internal combustion engines — Piston pins — Part 2: Inspection measuring principles
GSO ISO 18669-1:2025
ISO 18669-1:2021
Gulf Standard
Internal combustion engines — Piston pins — Part 1: General specifications
GSO ISO 6626-3:2025
ISO 6626-3:2019
Gulf Standard
Internal combustion engines — Piston rings — Part 3: Coil-spring-loaded oil control rings made of steel
GSO ISO 6626-2:2025
ISO 6626-2:2024
Gulf Standard
Internal combustion engines — Piston rings — Part 2: Coil-spring-loaded oil control rings of narrow width made of cast iron
ISO 12046:2025
International Standard
Synchronous belt drives — Automotive belts — Determination of physical properties
GSO ISO 6621-5:2025
ISO 6621-5:2020
Gulf Standard
Internal combustion engines — Piston rings — Part 5: Quality requirements
GSO ISO 6621-2:2025
ISO 6621-2:2020
Gulf Standard
Internal combustion engines — Piston rings — Part 2: Inspection measuring principles
GSO ISO 6621-1:2025
ISO 6621-1:2018
Gulf Standard
Internal combustion engines — Piston rings — Part 1: Vocabulary
ISO 18669-2:2025
International Standard
Internal combustion engines — Piston pins — Part 2: Inspection measuring principles
OS GSO ISO 6621-3:2024
ISO 6621-3:2021
Omani Standard
Internal combustion engines — Piston rings — Part 3: Material specifications
GSO ISO 6621-3:2024
ISO 6621-3:2021
Gulf Standard
Internal combustion engines — Piston rings — Part 3: Material specifications