# ISO 28721-2:2015 — Withdrawn and superseded ISO standards

For ISO 28721-2:2015, item title is Vitreous and porcelain enamels — Glass-lined apparatus for process plants — Part 2: Designation and specification of resistance to chemical attack and thermal shock; status code is 9599; successor is ISO 28721-2:2025; withdrawn / published date is 2015-11-30, recorded from its source on 2026-08-05.

- **Identifier:** ISO 28721-2:2015 _(verified: appears in the quote below)_
- **Item title:** Vitreous and porcelain enamels — Glass-lined apparatus for process plants — Part 2: Designation and specification of resistance to chemical attack and thermal shock _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 28721-2:2025
- **Withdrawn / published date:** 2015-11-30 _(verified: appears in the quote below)_

## What the source says

> 66379,IS,,ISO 28721-2:2015,Vitreous and porcelain enamels — Glass-lined apparatus for process plants — Part 2: Designation and specification of resistance to chemical attack and thermal shock,Émaux vitrifiés — Appareils émaillés pour les installations industrielles — Partie 2: Désignation et spécifications de la résistance à l'attaque chimique et au choc thermique,2015-11-30,2,['25.220.50'],ISO/TC 107,9599,[44899],[86916],"['en','fr']",3,"<p>ISO 28721-2:2015 specifies requirements for the resistance to chemical attack and thermal shock of chemical enamels and their designation for ordering purposes.</p><p>It is applicable to enamelled apparatus, piping and other components primarily used for

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).