Stainless steel tube mill line, referred to as welded pipe, is a steel pipe made of commonly used steel or steel strip after crimping and forming by the unit and mold. The production process of welded steel pipe is simple, the production efficiency is high, there are many varieties and specifications, and the investment in equipment is small, but the general strength is lower than that of seamless steel pipe. The production line is designed and manufactured on the basis of digesting and absorbing similar equipment at home and abroad, combining with my country’s national conditions, boldly innovating, and listening to users’ opinions extensively. The equipment is economical, reliable and stable.