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DIN EN 12209/A1
Building hardware - Mechanically operated locks and locking plates - Characteristics and test methods; German and English version EN 12209:2024/prA1:2026
DIN EN 12245/A1
Transportable gas cylinders - Fully wrapped composite cylinders; German and English version EN 12245:2022/prA1:2026
DIN EN 12252
LPG equipment and accessories - Equipping of LPG road tankers; German version EN 12252:2022+A1:2025
DIN EN 12255-1
Wastewater treatment plants - Part 1: General design and construction principles; German version EN 12255-1:2024
DIN EN 12255-2
Wastewater treatment plants – Part 2: Storm water management systems; German version EN 12255-2:2026
DIN EN 12255-3
Wastewater treatment plants - Part 3: Preliminary treatment; German version EN 12255-3:2024
DIN EN 12255-4
Wastewater treatment plants - Part 4: Primary treatment; German version EN 12255-4:2023
DIN EN 12255-5
Wastewater treatment plants - Part 5: Lagooning processes; German version EN 12255-5:2024
DIN EN 12255-6
Wastewater treatment plants - Part 6: Activated sludge process; German version EN 12255-6:2023
DIN EN 12255-7
Wastewater treatment plants – Part 7: Biological fixed-film reactors; German version EN 12255-7:2026
