DIN EN ISO 25239-4-2020 摩擦搅拌焊. 铝. 第4部分: 焊接工艺规范刚和评定(ISO 25239-4-2020); 德文版本EN ISO 25239-4-2020
Friction stir welding - Aluminium - Part 4: Specification and qualification of welding procedures (ISO 25239-4:2020); German version EN ISO 25239-4:2020
This International Standard specifies the requirements for the specification and qualification of welding procedures for the friction stir welding of aluminium. In this standard, the term \