UNI EN 10378
UNI EN 10378 (Welded stainless steel square and rectangular tubes for mechanical and structural engineering and decorative use - Technical delivery conditions)· UNI (イタリア) · 46 材料
UNI EN 10378 (Welded stainless steel square and rectangular tubes for mechanical and structural engineering and decorative use - Technical delivery conditions)· UNI (イタリア) · 46 材料