We can produces: (1) Square steel pipe :size :from 15x15mm to 100x100mm ,thickness from 0.55mm to 2.5mm . (2) Rectangle steel pipe : size :from 20x10mm to 50x100mm,thickness from 0.5-2.5mm. (3) Round steel pipe: size:from 14 to 50 ,thickness from 0.5mm-2.0mm. The tube applied to furniture; decorating material; steel material for door and window; supermarket shelves etc.