The VBL is a dedicated machine designed for the continuous production of welded I and T Beams, either parallel or tapered. The VBL operates with the Web plate in the vertical position. No tack weld welding is required except at the leading edge, after the Web has been aligned on the center line of the Flange.
Initially the Web and first Flange are fed into the VBL machine, the welding is carried out simultaneously from both sides of the Web over the full length of the Beam. After completion of the first Flange welding, the section is turned 180° and the alignment and welding operation repeated with the second Flang.