Home / Standards / DL/T 1422-2015 DL/T 1422-2015 Active 18Cr-8Ni系列奥氏体不锈钢锅炉管显微组织老化评级标准 Standard Type DL 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