DIN EN 1092-1 Flanges listed in this standard have been derived from various other standards around the world.  This standard encompasses flanges that were listed in BS 4504-3.1 and ISO 7005-1 and the opportunity was taken to revise some of the technical requirements applicable to DIN origin flanges.

The DIN EN 1092-1 standard covers nominal sizes DN 10 (NPS 3/8") to DN 4000 (NPS 160") with pressure designations PN 2.5 to PN 400.  These flanges are generally stocked in sizes DN 25 (NPS 1") to DN 300 (NPS 12") with a pressure designation of PN 16 in pipe bore and tube bore slip-on, along with blind flanges.