# ISO 7181:1982 — Withdrawn and superseded ISO standards For ISO 7181:1982, item title is Hydraulic fluid power — Cylinders — Bore and rod area ratios; status code is 9599; successor is ISO 7181:1991; withdrawn / published date is 1982-11-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 7181:1982 _(verified: appears in the quote below)_ - **Item title:** Hydraulic fluid power — Cylinders — Bore and rod area ratios _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 7181:1991 - **Withdrawn / published date:** 1982-11-01 _(verified: appears in the quote below)_ ## What the source says > 13795,IS,,ISO 7181:1982,Hydraulic fluid power — Cylinders — Bore and rod area ratios,Transmissions hydrauliques — Vérins — Rapports entre surfaces d'alésage et de tige,1982-11-01,1,['23.100.20'],ISO/TC 131/SC 3,9599,,[13796],['en'],3, ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).