UNE-EN 4801:2017 Aerospace series - Flange couplings - Swivel flange with 3 fastening holes, in heat resisting steel - Inch series (Endorsed by Asociación Española de Normalización in June of 2017.)
2017UNE-EN 4801:2017 Aerospace series - Flange couplings - Swivel flange with 3 fastening holes, in heat resisting steel - Inch series (Endorsed by Asociación Española de Normalización in June of 2017.)