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CEN/TC 164/WG 14
Valves and fitting for buildings and devices to prevent pollution by backflow
NA 054-05-09 AA
Plastics pipes of thermosetting materials
NA 119-07-18-01 UA
Plastics piping components for water supply
prEN 14163
Petroleum and natural gas industries - Pipeline transportation systems - Welding of pipelines (ISO 13847:2013, modified)
DIN EN 14163
Petroleum and natural gas industries - Pipeline transportation systems - Welding of pipelines (ISO 13847:2013, modified); German and English version prEN 14163:2021