(1)Manufacturers can use the same width of the strip steel to produce a variety of diameter steel pipe;
(2)The flatness of pipe is good, the size of it is more accurate, the spiral weld inside and outside increases the rigidity of pipe body, so the production process of SSAW steel pipe doesn't need sizing and straightening process after welding;
(3)Easy to achieve mechanization, automation and continuous production;
(4)Compared to other equipments those have similar size, it has a small size, small footprint and investment, and fast construction;
(5)Compared with the same size of the straight seam welded pipe, the weld seam per unit length of tube stock is comparatively long, which makes spiral welded pipe production has lower productivity.