Quality requirements for fusion welding of metallic materials - Part 4: Elementary quality requirements (ISO 3834-4:2021); German version EN ISO 3834-4:2021— 9 стр.
Quality requirements for fusion welding of metallic materials - Part 4: Elementary quality requirements (ISO 3834-4:2005); German version EN ISO 3834-4:2005— 8 стр.
Quality requirements for fusion welding of metallic materials - Part 4: Elementary quality requirements (ISO/FDIS 3834-4:2020); German and English version prEN ISO 3834-4:2020— 9 стр.
Quality requirements for fusion welding of metallic materials - Part 4: Elementary quality requirements (ISO 3834-4:2005); German version EN ISO 3834-4:2005— 8 стр.