UNE-EN ISO 10426-4:2004 Petroleum and natural gas industries - Cements and materials for well cementing - Part 4: Preparation and testing of foamed cement slurries at atmospheric pressure (ISO 10426-4:2004) (Endorsed by AENOR in March of 2005.)
2005UNE-EN ISO 10426-4:2004 Petroleum and natural gas industries - Cements and materials for well cementing - Part 4: Preparation and testing of foamed cement slurries at atmospheric pressure (ISO 10426-4:2004) (Endorsed by AENOR in March of 2005.)