# ISO 2505:1981 — Withdrawn and superseded ISO standards For ISO 2505:1981, item title is Unplasticized polyvinyl chloride (PVC) pipes — Longitudinal reversion — Test methods and specification; status code is 9599; successor is ISO 2505-1:1994 | ISO 2505-2:1994; withdrawn / published date is 1981-11-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 2505:1981 _(verified: appears in the quote below)_ - **Item title:** Unplasticized polyvinyl chloride (PVC) pipes — Longitudinal reversion — Test methods and specification _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 2505-1:1994 | ISO 2505-2:1994 - **Withdrawn / published date:** 1981-11-01 _(verified: appears in the quote below)_ ## What the source says > 7434,IS,,ISO 2505:1981,Unplasticized polyvinyl chloride (PVC) pipes — Longitudinal reversion — Test methods and specification,Tubes en polychlorure de vinyle (PVC) non plastifié — Retrait longitudinal à chaud — Méthodes d'essai et spécification,1981-11-01,2,['23.040.20'],ISO/TC 138/SC 5,9599,,"[7435,7436]","['en','fr']",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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).