Home / Standards / GB/T 38202-2019 GB/T 38202-2019 Active Installation, operation, maintenance of fully welded body ball valve 全焊接球阀的安装使用维护方法 Standard Type GBT ICS 23.060.10 CCS J16 Status 现行 Issue Date 2019-10-18 Implementation 2020-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A