DIN Standards Committee Fasteners
DIN 21057-12
Pipe classes for process plants - Part 12: Technical delivery conditions for pipe components of non alloyed and alloyed steel with specified properties at elevated temperatures of material group 1.2 and 5.1
Rohrklassen für verfahrenstechnische Anlagen - Teil 12: Technische Lieferbedingungen für Rohrbauteile aus unlegierten und legierten Stählen mit festgelegten Eigenschaften bei erhöhten Temperaturen der Werkstoffgruppe 1.2 und 5.1
Overview
This standard describes the technical delivery conditions and dimensions as well as allowable pressures at the allowable temperature (TS) for the following piping components: - pipes, seamless; - pipe fittings (tees, reducers, pipe elbows and caps); - flanges, type 05 (blind flange) and type 11 (welding neck flange); - fasteners (bolts, studs, nuts and washers). 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).
