Home / Standards / GB/T 20301-2015 GB/T 20301-2015 Active Oxyger-free copper tube for magnetic induction tube 磁控管用无氧铜管 Standard Type GBT ICS 77.150.30 CCS H62 Status 现行 Issue Date 2015-09-11 Implementation 2016-04-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A