DIN flange summary chart DescriptionRated Pressure / Presin Nominal / Nenndruck (in bar) (1 bar = 14.5 psi)12.561016254064100160250320400DINBlind Flanges2527252725272527252725272527Flat flange for welding25732576Welding neck flanges2630263026312632263326342635263626372638262826292627Lapped flanges, Plain collars26412642Loose flanges and rings for welding2652265326552656Loose flanges and rings with neck for welding 2673Oval plain threaded flanges2558Oval flanges, with neck threaded25612561Threaded flanges with neck2565256625662567256725682569Long neck welding flanges 2811528115