2013DIN EN ISO 12211:2013-04 Petroleum, petrochemical and natural gas industries - Spiral plate heat exchangers (ISO 12211:2012); English version EN ISO 12211:2012
2013DIN EN ISO 12211:2013 Petroleum, petrochemical and natural gas industries - Spiral plate heat exchangers (ISO 12211:2012); English version EN ISO 12211:2012
1970DIN EN ISO 12211 E:2010-08 Spiral plate heat exchangers for the petroleum, petrochemical and natural gas industries (draft)