Home / Standards / GB/T 34630.4-2017 GB/T 34630.4-2017 Active Friction stir welding—Aluminium and its alloys—Part 4:Specification and qualification of welding procedures 搅拌摩擦焊 铝及铝合金 第4部分:焊接工艺规程及评定 Standard Type GBT ICS 25.160.10 CCS J33 Status 现行 Issue Date 2017-09-29 Implementation 2018-04-01 Responsible Dept 国家标准委 Drafting Unit N/A