Petroleum and natural gas industries - Design and operation of subsea production systems - Part 4: Subsea wellhead and tree equipment (ISO/DIS 13628-4:2008); English version prEN ISO 13628-4:2008
Petroleum and natural gas industries - Drilling and production equipment - Wellhead and christmas tree equipment (ISO 10423:2009); English version EN ISO 10423:2009, only on CD-ROM— 456 стр.
