2017DIN EN 4808:2017-08 Aerospace series - Flange couplings - Weld coupling, 90° elbow, in nickel alloy - Inch series; German and English version EN 4808:2017
2017DIN EN 4808:2017 Aerospace series - Flange couplings - Weld coupling, 90? elbow, in nickel alloy - Inch series; German and English version EN 4808:2017
1970DIN EN 4808 E:2016-11 Aerospace series - Flange couplings - Weld coupling, 90° elbow, in nickel alloy - Inch series