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This standard specifies uniform principles for the creation of pipe classes for industrial above-ground piping systems made of metallic materials in process plants based on EN 13480. This responsible committee for this standard is Working Committee NA 012-00-03 AA "Dokumentation von Prozessanlagen" ("Documentation of process plants") at DIN Standards Committee Chemical Apparatus Engineering (FNCA).
This document has been replaced by: DIN 21057-1:2023-08 .