
Industrial Valves - Face-To-Face And Centre-To-Face Dimensions Of Metal Valves For Use In Flanged Pipe Systems - Pn And Class Designated Valves
出版:Nederlands Normalisatie Instituut

專家解讀視頻
2008 + A1 2012 [01/01/2012]2008 C1 2010 [01/09/2010]2008 [01/02/2008]DRAFT 2005 [01/04/2005]
Supersedes NEN EN 558-1 and NEN EN 558-2. (02/2008) 2008 Edition Re-Issued in January 2012 & incorporates AMD 1 2012. (01/2012)
EN 558:2017 - Identical