ISO 28921-2 : 2015现行
INDUSTRIAL VALVES - ISOLATING VALVES FOR LOW-TEMPERATURE APPLICATIONS - PART 2: TYPE TESTING
出版：International Organization for Standardization
专家解读视频
Defines requirements for the type testing of isolating valves for low-temperature applications to verify the performance of valves at a low temperature from -50 degrees C down to -196 degrees C.
BS EN ISO 28921-2 : 2017 - Identical
NS EN ISO 28921-2 : 2017 - Identical
PN EN ISO 28921-2 : 2017 - Identical
DIN EN ISO 28921-2 : 2017 - Identical
DS EN ISO 28921-2 : 2017 - Identical
SN EN ISO 28921-2 : 2017 - Identical
NF EN ISO 28921-2 : 2017 - Identical
DIN EN ISO 28921-2 E : 2017 - Identical
UNI EN ISO 28921-2 : 2017 - Identical
I.S. EN ISO 28921-2:2017 - Identical
NEN ISO 28921-2 : 2015 - Identical
NEN EN ISO 28921-2 : 2017 - Identical
UNE EN ISO 28921-2 : 2018 - Identical
NF ISO 28921-2 : 2016 - Identical
