FRANKLIN MODEL PTW-72 is a complete Automatic submerged twin-arc welding system. It is designed for fixturing and welding Three (3) piece built-up beams consisting of a web and two (2) flanges. The PTW-72 has a web capacity of 72 inches and flange capacities of 20” wide x 1" thick. A complete PTW-72 fabricating cell can be up to 300 ft. long. The system consists of a web loading gantry, web seam station, tack station unit, 4020 CNC Flange Loading Gantry and PTW-72 Pull Thru Welder with CNC Controls.