Home / Standards / GB/T 26302-2020 GB/T 26302-2020 Active Seamless copper and copper alloy tube for heat pipe 热管用铜及铜合金无缝管 Standard Type GBT ICS 77.150.30 CCS H62 Status 现行 Issue Date 2020-09-29 Implementation 2021-08-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A