DIN EN ISO 11960:2018
石油和天然气工业 用作井套管或油管的钢管(ISO/DIS 11960:2018);英文版 prEN ISO 11960:2018,仅在 CD-ROM 上
Petroleum and natural gas industries - Steel pipes for use as casing or tubing for wells (ISO/DIS 11960:2018); English version prEN ISO 11960:2018, only on CD-ROM