2. LUE Large diameter (thick wall )LSAW square and rectangular steel tube
　400*400-1420*1420mm Wall Thickness:10-80mm
3. High frequency welding square and rectangular steel tube
　30*30-400*400mm Wall Thickness: 2-16mm
4. JCOE Large diameter(thick wall) LSAW steel tube:
　325mm-1420mm Wall Thickness: 8-80mm
5. ERW small and medium welded steel tube
　57-508mm Wall Thickness: 2-16mm
6. Seamless steel tube
　32-720mm Wall Thickness: 3-60mm
　Material: Q195, Q235,Q345B,Q345JQD,20#,45#, stainless and so on.