For production of steel tube, pipe in round, square. 1. Pipe O.D.: 8~273mm 2. Wall thickness: 0.3~12mm ... . Speed: 0~90m/min Tube Mill, Steel Pipe Production Line, Pipe Mill1. To make steel pipe O.D. from 0.3 to 11inch ... to 12mm. The complete line include the following device:1. Double side Uncoiler2. Hoop cage or Horizontal Accumulator3. Main Machine: 3 ...