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DIN EN ISO 10427-2
Petroleum and natural gas industries - Equipment for well cementing - Part 2: Centralizer placement and stop-collar testing (ISO 10427-2:2004); English version EN ISO 10427-2:2004
Edition
2005-07
DIN EN ISO 20312
Petroleum and natural gas industries - Design and operating limits of drill strings with aluminium alloy components (ISO 20312:2011); English version EN ISO 20312:2011
Edition
2012-01