the line is special for heavy duty h beam production welder: Lincoln,USA hydraulic: China or specifed by customer 1. H Beam Production Line, built-up section line, beam welder, beam straightenerIt includes:1) Multi-head strip flame cutting machine2) H I T beam assembling machine3) H I T Submerged arc welding SAW welding machine4) 90 degree Movable overturning machine5) 45/60 degreeHydraulic ...