1) Round steel pipe :  Size from 10mm to 114mm, thickness from 0.5mm to 5 mm

2) Square steel pipe : Size from 10*10mm to 120*120mm, thickness from 0.5mm to 5 mm

3) Rectangular steel pipe : Size from 10*20mm to 75*150mm,thickness from 0.5mm to    

    5mm.

4) And all the ERW pipes can be made by Pre-Galvanized steel pipe.