UNE-EN ISO 11960:2021 Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells (ISO 11960:2020) (Endorsed by Asociación Española de Normalización in June of 2021.)
2021UNE-EN ISO 11960:2021 Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells (ISO 11960:2020) (Endorsed by Asociación Española de Normalización in June of 2021.)