· UNI EN ISO 3834 Part 2 ... DIN 18800-2 , AWS 01.1 Welding process ISO 4063 111 121 135 136 138...
4
· UNI EN ISO 3834 Part 2 ... DIN 18800-2 , AWS 01.1 Welding process ISO 4063 111 121 135 136 138 783 Parent material groups ISO/tr 15608 I Job function and level