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DIN 2505 [Withdrawn] referenced in following documents:

Document number Edition Title
DIN 3159 1965-05 Assembling dimensions of flanges for fittings for refrigerating installations up to nominal pressure 25 More 
FlüGasAnlErl HE 1990-08-30 Sicherheitstechnische Anforderungen an Flüssiggasanlagen More 
PD 6438 1969-10-31 A review of present methods for design of bolted flanges for pressure vessels More