Home / Standards / GB/T 15530.4-2008 GB/T 15530.4-2008 Active Copper alloy hubbed slip-on flanges for brazing or welding 铜合金带颈平焊法兰 Standard Type GBT ICS 23.040.60 CCS J15 Status 现行 Issue Date 2008-08-25 Implementation 2009-04-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A