DIN EN ISO 13628-4:2011
石油和天然气工业.海底开采系统的设计和操作.第4部分:海底井口装置和采油树设备(ISO 13628-4-2010);英文版本EN ISO 13628-4-2010,仅在CD-ROM上
Petroleum and natural gas industries - Design and operation of subsea production systems - Part 4: Subsea wellhead and tree equipment (ISO 13628-4:2010); English version EN ISO 13628-4:2010, only on CD-ROM