![Steel Pipe Manufacturing Processes mandrel mill process ...](/e69yszg/654.jpg)
Steel Pipe Manufacturing Processes mandrel mill process ...
The advent of rolling mill technology and its development during the first half of the nineteenth century also heralded in the industrial manufacture of tube and pipe. Initially, rolled strips of sheet were formed into a circular cross section by funnel arrangements or rolls, and then butt or lap welded in the same heat (forge welding process).