DIN EN 4550-4 (2015-03)被替代
Aerospace series - Pipe coupling, 37ø - Design configuration - Inch series Part 4: Female sealing ends; German and English version EN 4550-4:2014
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
SN EN 4550-4:2015 - Identical
ONORM EN 4550-4:2004 - Identical
NS EN 4550-4:2014 - Identical
BS EN 4550-4:2014 - Identical
UNI EN 4550-4:2016 - Identical
NF EN 4550-4:2015 - Identical
