Tube Mill, Steel Pipe Production Line, Pipe Mill, for production of steel tube, pipe in round, square. Tube Welding machine/Welded Steel Pipe Production LineDear Customers,This is Ada, ... . Main technical parameters and details:1.pipe diameter: Φ42-Φ508 2.pipe thickness:from 0.3 to 12mm3.welding ... wishesSkype:adawei1019Moibile:0086-13662169442 Tube Welding machine/Welded Steel Pipe Production Line