UNE-EN 14161:2011+A1:2015 Petroleum and natural gas industries - Pipeline transportation systems (ISO 13623:2009 modified) (Endorsed by AENOR in June of 2015.)
2015UNE-EN 14161:2011+A1:2015 Petroleum and natural gas industries - Pipeline transportation systems (ISO 13623:2009 modified) (Endorsed by AENOR in June of 2015.)