UNE-EN 4805:2017 Aerospace series - Flange couplings - Weld coupling, Straight, in heat resisting steel - Inch series (Endorsed by Asociación Española de Normalización in July of 2017.)
2017UNE-EN 4805:2017 Aerospace series - Flange couplings - Weld coupling, Straight, in heat resisting steel - Inch series (Endorsed by Asociación Española de Normalización in July of 2017.)