
Specification for approval testing of welders working to approved welding procedures. Fusion welding of steel.
NORMA vydaná dňa 31.12.1974
Designation standards: BS 4871-1:1974
Note: NEPLATNÁ
Publication date standards: 31.12.1974
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS