Home / Standards / GB/T 39856-2021 GB/T 39856-2021 Active Hot rolled titanium and titanium alloy seamless tubes 热轧钛及钛合金无缝管材 Standard Type GBT ICS 77.150.50 CCS H64 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A