The complex is designed for flash-butt welding in field conditions with pulsed flashing of rails with cross-section of 6500-10000 mm² with burr removal immediately after welding. The complex is produced in the form of a 20ft sea container, designed for mounting both on the truck base and on a railway platform moving by rail to the welding work areas. If necessary, it is possible to install and operate in stationary conditions for the production of rail strings.