DIN EN 4557:2004 Aerospace series - Pipe couplings, 37°, spherical, in heat resisting steel - Tees nipples, welded end - Inch series; German and English version EN 4557:2003
This standard specifies the characteristics of welded tees with nipple for inch series pipe couplings, 37? spherical, in heat resisting steel, for aerospace applications. Nominal pressure: Class D per ISO 6771#,,#
DIN EN 4557:2004 history
2004DIN EN 4557:2004-08 Aerospace series - Pipe couplings, 37°, spherical, in heat resisting steel - Tees nipples, welded end - Inch series; German and English version EN 4557:2003
2004DIN EN 4557:2004 Aerospace series - Pipe couplings, 37°, spherical, in heat resisting steel - Tees nipples, welded end - Inch series; German and English version EN 4557:2003