Home / Standards / GB/T 12223-1989 GB/T 12223-1989 Abolished Part-turn valve actuator attachment 部分回转阀门驱动装置的连接 Standard Type GBT ICS 23.060 CCS J16 Status 废止 Issue Date 1990-01-04 Implementation 1990-12-01 Responsible Dept N/A Drafting Unit N/A