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ISO 28721-4:2015

Vitreous and porcelain enamels — Glass-lined apparatus for process plants — Part 4: Quality requirements for glass-lined flanged steel pipes and flanged steel fittings

Publication date:   Oct 26, 2015

General information

90.60   Close of review   Sep 3, 2026

ISO

ISO/TC 107 Metallic and other inorganic coatings

International Standard

25.220.50   Enamels

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Scope

ISO 28721-4:2015 specifies the quality requirements for glass-lined flanged steel pipes and flanged steel fittings used for process plants.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 28721-4:2010

NOW

PUBLISHED
ISO 28721-4:2015
90.60 Close of review
Sep 3, 2026