Home / Standards / GB/T 23520-2009 GB/T 23520-2009 Abolished Platinumt/niobium clad anode strip for cathodic protection 阴极保护用铂/铌复合阳极板 Standard Type GBT ICS 77.120.99 CCS H68 Status 废止 Issue Date 2009-04-08 Implementation 2010-02-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A