NS EN 10378
NS EN 10378 (Welded stainless steel square and rectangular tubes for mechanical and structural engineering and decorative use - Technical delivery conditions)· NS (ノルウェー) · 46 材料
NS EN 10378 (Welded stainless steel square and rectangular tubes for mechanical and structural engineering and decorative use - Technical delivery conditions)· NS (ノルウェー) · 46 材料