EN 1092-1 is a European standard that specifies the flange types and specific requirements for steel flanges. Nominal pressure, facings, tolerances, threading, bolt sizes, flange jointing face & so much more. 

Type 01 Plate Flange
Type 01 Plate Flange
Type 01 Plate Flange Red. b-measure
Type 01 Plate Flange Red. b-measure
Type 02 Loose plate flange
Type 02 Loose plate flange
Type 04 Loose flange
Type 04 Loose flange
Type 05 Blind flange
Type 05 Blind flange
Type 05 Blind flange Tongue according to DIN
Type 05 Blind flange Tongue according to DIN
Type 11 Welding Neck
Type 11 Welding Neck
Type 11 Welding Neck double stamped DIN
Type 11 Welding Neck double stamped DIN
Type 12 Hubbed slip-on flange
Type 12 Hubbed slip-on flange
Type 13 Hubbed threaded flange
Type 13 Hubbed threaded flange