Spiral welded pipe production line is mainly used to produce spiral steel pipes. The steel coils are unfolded and leveled by the spiral welded pipe mill.then they are sent to the forming machine in a certain angel. Supplemented by a certain angle, the continual pipes are formed in the three-roll rolling machine. Continual spiral welding is performed by submerged-arc welding machine.Spiral welded pipe mill can produce very large diameter pipes through economy investment which is not feasible to other technology Spiral welded pipe mill, spiral welded pipe production line .