Home / Standards / GB/T 34647-2017 GB/T 34647-2017 Active Temper designation system for titanium and titanium alloy 钛及钛合金产品状态代号 Standard Type GBT ICS 77.120.50 CCS H64 Status 现行 Issue Date 2017-09-29 Implementation 2018-04-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A