... , 32-89mm ......610mm diameter welded pipes straight welded pipe production line: 8-20mm, 12-32mm, 16-50mm, 25- ... 76mm, 32-89mm,....,610mm diameter welded pipes.Work flow: {Steel ... +Main driving unit +Forming unit +Guide unit + High frequency induction welding unit +squeeze roller)+ De-burr frame →→Cooling ... .7mm φ219mmx5.Omm 30m/min . Straight Welded Pipe Mill Line