The HFI horizontal welding line is the combined engineering solution for the production of H-beams with variable shape and inertia, double-tapered beams and K-shaped beams. The line consists of the manipulator (CB – Column & Boom) with double welding heads, assembly jig (HAJ – Hydraulic Assembling Jig), 180 ° rotators and the horizontal straightening machine (BSM – Beam Straightening Machine). The solution makes this line one of the most used in the field of PEB and one-side welding applications.