Home / Standards / GB/T 4423-2007 GB/T 4423-2007 Abolished Copper and copper-alloy cold-drawn rod and bar 铜及铜合金拉制棒 Standard Type GBT ICS 77.150.30 CCS H62 Status 废止 Issue Date 2007-04-30 Implementation 2007-11-01 Responsible Dept 中国有色金属工业协会 Drafting Unit 中国有色金属工业协会