... 2.Thickness: 0.3-8.0mm Welding Steel Tube Mill Line: used for producing round, square, rectangle pipes, etc.Pipe ... .: 8-219mmThickness: 0.3-8.0mmSpeed: 0-90m/minThe complete line include the following device:1) Un-coiler (Option: Manual & ... , Welding and Sizing millA) Feeding & Leveling deviceB) Forming machineC) Guiding, extruding, Welding & scraping deviceD) One set of Cooling water tankE) Sizing ...