Current family vs legacy callout
EN 10305 vs DIN 2391
EN 10305 superseded much of the technical territory associated with DIN 2391, but old drawings should be converted through documented engineering review.
On this page
The short answer
DIN 2391 remains common on legacy drawings and in supplier language. EN 10305 reorganizes precision tube requirements into application- and route-specific parts with updated steel names, conditions, tolerances, and inspection references. A historical DIN designation is not safely replaced by changing only the standard number.
Migration checklist
Map the manufacturing route, steel and condition, dimensions, tolerances, surface, tests, and inspection documentation. Preserve the original contract requirement until the owner approves a technically complete replacement.
Sources and limitations
- CEN-CENELEC Standards catalogue — Official catalogue entry point for EN standards and current-status verification.
- DIN Media standards catalogue — EN 10305 series — Authorized national-adoption catalogue and German edition-status reference.
These references inform this page but do not replace the purchased standard or national adoption. Numeric chemistry, property, and tolerance requirements remain controlled standards content. The contract edition, drawing, purchase order, and applicable law govern acceptance.