# ISO 4437:1997 — Withdrawn and superseded ISO standards For ISO 4437:1997, item title is Buried polyethylene (PE) pipes for the supply of gaseous fuels — Metric series — Specifications; status code is 9599; successor is ISO 4437:2007; withdrawn / published date is 1997-08-28, recorded from its source on 2026-08-05. - **Identifier:** ISO 4437:1997 _(verified: appears in the quote below)_ - **Item title:** Buried polyethylene (PE) pipes for the supply of gaseous fuels — Metric series — Specifications _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 4437:2007 - **Withdrawn / published date:** 1997-08-28 _(verified: appears in the quote below)_ ## What the source says > 1082,IS,,ISO 4437:1997,Buried polyethylene (PE) pipes for the supply of gaseous fuels — Metric series — Specifications,Canalisations enterrées en polyéthylène (PE) pour réseaux de distribution de combustibles gazeux — Série métrique — Spécifications,1997-08-28,2,"['75.200','83.140.30']",ISO/TC 138/SC 4,9599,[10339],[37627],"['en','fr']",17, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).