Steel gate, glob and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries (ISO 15761:2002); German version EN ISO 15761:2002 (German and English text)— 84 стр.
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.