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This European Standard specifies requirements for the manufacture of unfired pressure vessels and their parts, made of steels, including their connections to non-pressure parts. It specifies requirements for material traceability, manufacturing tolerances, welding requirements, requirements for permanent joints other than welding, production tests, forming requirements, heat treatment, repairs and finishing operations. The responsible German committee is Working Committee NA 012-00-05 AA "Unbefeuerte Druckbehälter" ("Unfired pressure vessels") at DIN Standards Committee Chemical Apparatus Engineering (FNCA).
This document replaces DIN EN 13445-4/A1:2023-06 , DIN EN 13445-4:2021-12 .