# ISO 4978:1983 — Withdrawn and superseded ISO standards For ISO 4978:1983, item title is Flat rolled steel products for welded gas cylinders; status code is 9599; successor is ISO 4978:2018 | ISO/WD 4978; withdrawn / published date is 1983-12-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 4978:1983 _(verified: appears in the quote below)_ - **Item title:** Flat rolled steel products for welded gas cylinders _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 4978:2018 | ISO/WD 4978 - **Withdrawn / published date:** 1983-12-01 _(verified: appears in the quote below)_ ## What the source says > 10991,IS,,ISO 4978:1983,Flat rolled steel products for welded gas cylinders,Produits plats laminés en acier pour bouteilles à gaz soudées,1983-12-01,1,['77.140.30'],ISO/TC 17/SC 10,9599,,"[69962,23055]","['en','fr']",4,"

Specifies the characteristics of flat rolled steel products with a thickness up to 6 mm of the unalloyed steels listed in table 1 which are intended for welded gas cylinders with a normalized structure. Describes for instance the manufacture of the steel, heat treatment, chemical composition, properties, surface condition, dimensions, acceptance tests, samples and testpieces.

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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).