DIN EN 4807:2017 Aerospace series - Flange couplings - Weld coupling, 90? elbow, in heat resisting steel - Inch series; German and English version EN 4807:2017
2017DIN EN 4807:2017-08 Aerospace series - Flange couplings - Weld coupling, 90° elbow, in heat resisting steel - Inch series; German and English version EN 4807:2017
2017DIN EN 4807:2017 Aerospace series - Flange couplings - Weld coupling, 90? elbow, in heat resisting steel - Inch series; German and English version EN 4807:2017