UNI EN ISO 27509 : 2021
Current
The latest, up-to-date edition.
Petroleum and natural gas industries - Compact flanged connections with IX seal ring
25-03-2021
This document specifies detailed manufacturing requirements for circular steel and nickel alloy compact flanged connections and associated seal rings, for designated pressures and temperatures in class designations CL 150 (PN 20) to CL 1500 (PN 260) for nominal sizes from DN 15 (NPS ½) to DN 1200 (NPS 48), and for CL 2500 (PN 420) for nominal sizes from DN 15 (NPS ½) to DN 600 (NPS 24).
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