Home / Standards / NB/T 20407-2017 NB/T 20407-2017 Active 压水堆核电厂堆内构件设计制造规范 Standard Type NB ICS N/A CCS N/A Status Active Issue Date 2017-02-10 Implementation 2017-07-01 Centralized Committee 国家能源局 Issuing Authority 国家能源局