In the nineteenth century, rolling mill technology was the only technique used to manufacture stainless tubes and pipes for industrial purpose. This rolling technique involved long procedures. The rolled strips of sheet were formed into a circular cross section with the help of funnel rolls. The lap welding was then done on these rolled strips through the forge welding process.
Thankfully with the advent of development and technology, various processes came into existence for the manufacturing of stainless tubes and pipes in India. Now-a-days, stainless steel pipes and tubes are manufactured with continuous tube mill using multitorch tungsten Inert gas. The filler metal or forge welding process is not used in this technique.