GB/T 41979.4-2022搅拌摩擦点焊铝及铝合金第4部分:焊接工艺规程及评定国家标准
英文:Friction stir spot welding—Aluminium and its alloys—Part 4:Specification and qualification of welding procedures GB/T...
英文:Friction stir spot welding—Aluminium and its alloys—Part 4:Specification and qualification of welding procedures GB/T...