# ISO 6580:1981 — Withdrawn and superseded ISO standards

For ISO 6580:1981, item title is General purpose industrial fans — Circular flanges — Dimensions; status code is 9599; successor is ISO 6580:2005; withdrawn / published date is 1981-09-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 6580:1981 _(verified: appears in the quote below)_
- **Item title:** General purpose industrial fans — Circular flanges — Dimensions _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 6580:2005
- **Withdrawn / published date:** 1981-09-01 _(verified: appears in the quote below)_

## What the source says

> 12986,IS,,ISO 6580:1981,General purpose industrial fans — Circular flanges — Dimensions,Ventilateurs courants industriels — Brides circulaires — Dimensions,1981-09-01,1,['23.120'],ISO/TC 117,9599,,[41116],"['en','fr']",2,<p>Specifies the dimensions of circular flanges for industrial fans. It does not apply to heavy duty types with greater flange thickness. It adopts the R 20 Series as per ISO 497.</p>

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).