Steel Bars

We are a spanish manufacturer of packaging material. For our production demand we buy monthly full trucks / full containers (25t) of following material.
We need following material:
Hollow rectangular steel bars (black) 80x40x2 x 2300mm: 18t approx
Hollow rectangular steel bars (black) 80x40x2 x 6000mm: 4t approx
Hollow suare steel bars (black) 50x50x2 x6000mm: 1,5t
Hollow square steel bars (black) 50x50x2x6000mm:1,5t