DIN EN 4553:2004-08 Aerospace series - Pipe coupling 37°, spherical, in heat resisting steel - Elbow 90° nipples, welded end - Inch series; German and English version EN 4553:2003
2004DIN EN 4553:2004-08 Aerospace series - Pipe coupling 37°, spherical, in heat resisting steel - Elbow 90° nipples, welded end - Inch series; German and English version EN 4553:2003
2004DIN EN 4553:2004 Aerospace series - Pipe coupling 37°, spherical, in heat resisting steel - Elbow 90° nipples, welded end - Inch series; German and English version EN 4553:2003