
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:Norwegian Standards (Norges Standardiseringsforbund)

專家解讀視頻
2017 [01/05/2017]2008 + A1 2011 [01/03/2012]2008 AC 2010 [01/12/2010]2008 [01/05/2008]
Supersedes NS EN 558-1 and NS EN 558-2. (05/2008) Supersedes NS ISO 6554. (05/2017)
EN 558:2017 - Identical