Home / Standards / GB/T 12225-2018 GB/T 12225-2018 Active General purpose industrial valves—Specification of copper alloy castings 通用阀门 铜合金铸件技术条件 Standard Type GBT ICS 23.060.01 CCS J16 Status 现行 Issue Date 2018-05-14 Implementation 2018-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A