Home / Standards / NB/T 20005.33-2015 NB/T 20005.33-2015 Active 压水堆核电厂用碳钢和低合金钢 第33部分:安全壳用15Mn钢管 Standard Type NB ICS N/A CCS N/A Status Active Issue Date 2015-04-02 Implementation 2015-09-01 Centralized Committee 能源 Issuing Authority 能源