UNE-EN 14163:2001 Petroleum and natural gas industries. Pipeline transportation systems. Welding of pipelines (ISO 13847:2000 modified) (Endorsed by AENOR in March of 2002.)
2006UNE-EN 14163:2001/AC:2006 Petroleum and natural gas industries - Pipeline transportation systems - Welding of pipelines (ISO 13847:2000 modified) (Endorsed by AENOR in April of 2006.)
2002UNE-EN 14163:2001 Petroleum and natural gas industries. Pipeline transportation systems. Welding of pipelines (ISO 13847:2000 modified) (Endorsed by AENOR in March of 2002.)