Home / Standards / GB/T 33637-2017 GB/T 33637-2017 Abolished Cathodic protection—MMO/Ti flexible anode 阴极保护 MMO/Ti柔性阳极 Standard Type GBT ICS 25.220.99 CCS A29 Status 废止 Issue Date 2017-05-31 Implementation 2017-12-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A