This selection matrix compares four dominant fusion arc welding processes—SAW, FCAW, GMAW-Pulse and GTAW—on deposition rate, weld quality, position capability, heat input, operator skill and total cost per meter. For a 25 mm carbon steel butt weld, SAW delivers the lowest TCM (5–15 USD/m) due to high deposition and automation; FCAW and GMAW-Pulse fall mid-range (18–38 USD/m); GTAW is highest (90–180 USD/m) but remains necessary for demanding root passes and exotic alloys. Wuxi ABK equipment (HGZ rotators, LH column booms, HBJ positioners and orbital GTAW cells) integrates with buyer-selected power sources across all four processes.