Draft Document - Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 4: Finishing welding of aluminium castings (ISO/DIS 15614-4:2021); German and English version prEN ISO 15614-4:2021
ISO/DIS 15614-4:2021文件草稿金属材料焊接工艺规范和评定焊接工艺试验第4部分:铝铸件的精焊;德文和英文版本prEN ISO 15614-4:2021