UNE-CEN/TR 14473:2020 Transportable gas cylinders - Porous materials for acetylene cylinders (Endorsed by Asociación Española de Normalización in January of 2021.)
2021UNE-CEN/TR 14473:2020 Transportable gas cylinders - Porous materials for acetylene cylinders (Endorsed by Asociación Española de Normalización in January of 2021.)