Home / Standards / NB/T 20514-2018 NB/T 20514-2018 Active 核级板式热交换器设计制造规范 Standard Type NB ICS N/A CCS N/A Status Active Issue Date 2018-12-10 Implementation 2019-04-01 Centralized Committee 国家能源局 Issuing Authority 国家能源局