... production of steel tube, pipe in round, square. 1. Pipe O.D.: 8~275mm 2 ... . Wall thickness: 0.3~12mm 3. Speed: 0~90m/min Steel Tube Mill Line, Steel Pipe Production Line, Pipe ... Mill, Steel pipe production line1. To make steel pipe O.D. ... from 0.3 to 11inch(8mm to 273mm)2. Wall thickness from 0.3 to 12mm.The complete line ...