Home / Standards / GB/T 15530.2-1995 GB/T 15530.2-1995 Active Copper alloy welding neck flanges 铜合金对焊法兰 Standard Type GBT ICS 23.040.60 CCS J15 Status 现行 Issue Date 1995-04-02 Implementation 1996-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A