Cold formed welded structural hollow sections of non-alloy and fine grain steels - Part 1: Technical delivery conditions; German version EN 10219-1:2006— 39 стр.
Steel tubes for precision applications - Technical delivery conditions - Part 5: Welded and cold size square and rectangular tubes; German version EN 10305-5:2003— 25 стр.
Steel tubes for precision applications - Technical delivery conditions - Part 5: Welded and cold size square and rectangular tubes; German version EN 10305-5:2003— 25 стр.