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DIN EN ISO 9606 rev
Qualification testing of welders - Fusion welding
DIN EN 17928-3
Gas infrastructure - Injection station - Part 3: Specific requirements regarding the injection of hydrogen fuel gas; German version FprEN 17928-3:2024
EN 17928-3
Gas infrastructure - Injection stations - Part 3: Specific requirements regarding the injection of hydrogen
DIN ISO 21940-21
Mechanical vibration - Rotor balancing - Part 21: Description and evaluation of balancing machines (ISO 21940-21:2022)