DIN EN ISO 10439-4 : 2015 Title: Petroleum, petrochemical and natural gas industries - Axial and centrifugal compressors and expander-compressors - Part 4: Expander-compressors (ISO 10439-4:2015); English version EN ISO 10439-4:2015 Year: 2015 Publisher: DIN Media GmbH Availability: Within 1-2 working days