Home / Standards / GB/T 39330-2020 GB/T 39330-2020 Active Technical specification for surface treatment of titanium alloy castings 钛合金铸件表面处理技术规范 Standard Type GBT ICS 77.120.50 CCS J31 Status 现行 Issue Date 2020-11-19 Implementation 2021-06-01 Responsible Dept 国家标准委 Drafting Unit N/A