# ISO 18225:2007 — Withdrawn and superseded ISO standards

For ISO 18225:2007, item title is Plastics piping systems — Multilayer piping systems for outdoor gas installations — Specifications for systems; status code is 9599; successor is ISO 18225:2012; withdrawn / published date is 2007-10-22, recorded from its source on 2026-08-05.

- **Identifier:** ISO 18225:2007 _(verified: appears in the quote below)_
- **Item title:** Plastics piping systems — Multilayer piping systems for outdoor gas installations — Specifications for systems _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 18225:2012
- **Withdrawn / published date:** 2007-10-22 _(verified: appears in the quote below)_

## What the source says

> 44698,IS,,ISO 18225:2007,Plastics piping systems — Multilayer piping systems for outdoor gas installations — Specifications for systems,Systèmes de canalisations en plastique — Tubes multicouches destinés à l'alimentation en gaz à l'extérieur des bâtiments — Spécifications pour les systèmes,2007-10-22,1,"['23.040.45','23.040.20','75.200']",ISO/TC 138/SC 4,9599,,[60931],"['en','ru']",18,"<p>ISO 18225:2007 specifies general and performance requirements for multilayer pipe systems based on pipes made from thermoplastics and intended to be used for gas supply. </p><p>It gives requirements for the design of pipe systems consisting of multilayer pipes based on thermoplastics and for which at least

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).