Reference details
- Reference
- EN ISO 28721-4:2012
- Official title
- Vitreous and porcelain enamels - Glass-lined apparatus for process plants - Part 4: Quality requirements for glass-lined flanged steel pipes and flanged steel fittings (ISO 28721-4:2010)
- Organisation
- CEN
- Publisher status in source
- WithdrawnThis is the status recorded in the source, not a statement that this is the latest edition.
- Source access
- 19 October 2026
Research and application
Begin with the official scope and the product configuration. The title identifies a subject; it does not establish every product, use condition or legal requirement covered by the publication.
Product research routes
- Pressure equipment and fluid systems
Pressure boundaries, fluid characteristics and the interaction of vessels, piping and protective devices.
- Metals, welding and surface treatment
Material grade, joining process and surface condition as linked elements of technical performance.
- Wood, paper, glass and ceramics
Material and product methods for organic and inorganic materials, including the effect of processing and intended use.
Questions for the evidence file
- Pressure design basis
- Material traceability
- Joining procedures
- Inspection and protective-device evidence
- Material certificates
- Process qualification
Record the exact edition and associated amendments, the assessed object, the evidence examined and the limits of the conclusion. Explore IESQ research for detailed product and standard studies.
Legal citation
No Commission citation record has been linked to this reference in the IESQ index. That is an index result, not a conclusion that the standard is uncited. Consult the relevant Commission list and Official Journal acts.
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