ISO 7121:2016现行
Steel ball valves for general-purpose industrial applications
出版：International Organization for Standardization
专家解读视频
Defines the requirements for a series of steel ball valves suitable for general-purpose industrial applications.
BS ISO 7121 : 2016 - Identical
NEN ISO 7121 : 2016 - Identical
NBN E 29 318 : 1989 - Identical
BS ISO 7121 : 2016 - Identical
NFE 29 470 : 1989 - Similar to
NEN ISO 7121 : 2016 - Identical
