These complete plants are highly integrated, multifunctional plants in terms of functionality in small production areas. The equipment includes three main operations for the manufacture of welded I-beams: assembly - welding - straightening the geometry of the shelves. The mill is designed for the manufacture of welded I-beams and Taurus beams in various cross-sections. The equipment performs the following operations simultaneously: preliminary and final assembly of beams, correction of shelf welding deformation ("mushroom shape"). Universal assembly