Solicitudes De Croacia

I'm looking for manufacturer of square carbon steel tubes. 1. Metal: Steel, welded square and rectangular tubes EN10305-5, E220, Option 5: Ra max. 0,9 μm; dimension 14 x 14 x 0,4 mm; quantity 500.000 m/ year.

I need companies that use carbon in production for the automotive industry, construction, pharmaceuticals...Every company that need carbon. Can you help me?