NP EN ISO 6520-1:2000 Welding and allied processes Classification of geometric imperfections in metallic materials Part 1:Fusion welding(ISO 6520-1-1998)
2001NP EN ISO 6520-1:2000 Welding and allied processes Classification of geometric imperfections in metallic materials Part 1:Fusion welding(ISO 6520-1-1998)