# ISO 4056:1978 — Withdrawn and superseded ISO standards

For ISO 4056:1978, item title is Polyethylene (PE) pipes and fittings — Designation of polyethylene, based on nominal density and melt flow index; status code is 9599; successor is ISO 12162:1995 | ISO/DIS 4056; withdrawn / published date is 1978-08-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4056:1978 _(verified: appears in the quote below)_
- **Item title:** Polyethylene (PE) pipes and fittings — Designation of polyethylene, based on nominal density and melt flow index _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 12162:1995 | ISO/DIS 4056
- **Withdrawn / published date:** 1978-08-01 _(verified: appears in the quote below)_

## What the source says

> 9762,IS,,ISO 4056:1978,"Polyethylene (PE) pipes and fittings — Designation of polyethylene, based on nominal density and melt flow index","Tubes et raccords en polyéthylène (PE) — Désignation du polyéthylène, basée sur la masse volumique nominale et sur l'indice de fluidité à chaud",1978-08-01,1,"['23.040.45','23.040.20']",ISO/TC 138,9599,,"[21062,9763]","['en','fr']",1,"<p>Polyethylene material for pipe production ist designated in terms of a figure code. The first group of figures consists of the second and third significant figure of nominal density, the second group consists of the melt flow index multiplied by 100.</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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).