Historical
DIN 2605-2:1995
Steel butt-welding pipe fittings - Part 2: Elbows and bends for use at full service pressure (FOREIGN STANDARD)
The document applies to seamless and welded tube elbows having the same maximum allowable working pressure than the tubes to be welded on. These elbows used as welding fittings.
Deutsches Institut für Normung [din]