Home / Standards / GB/T 22652-2008 GB/T 22652-2008 Abolished Overlaying-welding procedure qualification for valves sealing face 阀门密封面堆焊工艺评定 Standard Type GBT ICS 23.060.01 CCS J16 Status 废止 Issue Date 2008-12-23 Implementation 2009-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A