# ISO 8521:2009 — Withdrawn and superseded ISO standards

For ISO 8521:2009, item title is Plastics piping systems — Glass-reinforced thermosetting plastics (GRP) pipes — Test methods for the determination of the apparent initial circumferential tensile strength; status code is 9599; successor is ISO/NP 8521 | ISO 8521:2020; withdrawn / published date is 2009-08-06, recorded from its source on 2026-08-05.

- **Identifier:** ISO 8521:2009 _(verified: appears in the quote below)_
- **Item title:** Plastics piping systems — Glass-reinforced thermosetting plastics (GRP) pipes — Test methods for the determination of the apparent initial circumferential tensile strength _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/NP 8521 | ISO 8521:2020
- **Withdrawn / published date:** 2009-08-06 _(verified: appears in the quote below)_

## What the source says

> 46535,IS,,ISO 8521:2009,Plastics piping systems — Glass-reinforced thermosetting plastics (GRP) pipes — Test methods for the determination of the apparent initial circumferential tensile strength,Systèmes de canalisations en matières plastiques — Tubes en plastiques thermodurcissables renforcés de verre (PRV) — Méthodes d'essai pour la détermination de la résistance en traction circonférencielle initiale apparente,2009-08-06,2,['23.040.20'],ISO/TC 138/SC 6,9599,[15747],"[68569,75170]",['en'],18,"<p>ISO 8521:2009 specifies six test methods for the determination of the initial circumferential tensile wall strength per unit of length of glass-reinforced thermosetting plastics (GRP) pipes.</p><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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).