
Wastewater lifting plants for buildings and sites Part 4: Non-return valves for faecal-free wastewater and wastewater containing faecal matter
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
NEN EN 12050-4:2015 - Identical
NS EN 12050-4:2015 - Identical
UNE EN 12050-4:2015 - Identical
NF EN 12050-4:2015 - Identical
ONORM EN 12050-4:2015 - Identical