I.S. EN ISO 14903:2017现行
Refrigerating Systems and Heat Pumps - Qualification of Tightness of Components and Joints (iso 14903:2017)
出版：National Standards Authority of Ireland
专家解读视频
Gives the qualification procedure for type approval of the tightness of hermetically sealed and closed components, joints and parts used in refrigerating systems and heat pumps as described in relevant parts of ISO 5149.
EN ISO 14903 : 2017 - Identical
ISO 14903 : 2017 - Identical
ISO 14903 : 2017 - Identical
EN ISO 14903 : 2017 - Identical
EN ISO 14903:2017 - Identical
