U Type Box Assembly Machine Box Beam Production Line Steel Structure Production Line The automation control is fulfilled in the production process of heavy duty beam vertical assembly machine. The process steps of clamping, alignment, positioning and automatic spot welding for flange plate and web plate are controlled by Japanese Mitsubishi programmable logic controller and AC frequency converter. Thus, the efficiency of the equipment is more than two times of ordinary assembly machine. This kind of equipment of our company has the merits of working stably and reliably. Equipped with tracking arc-guide mechanism, the welding gun can assure the quality of spot welding. Specification Length of work-piece4000-15000mm Thickness of wprk-piece20-80mm Max loading capacity20t Frame moving speed4/6m/min Hydraulic system pressure14MPa Left-right oil cylinder max working pressure15t Up oil cylinder max pressure30t Left-right oil cylinder max stroke800mm Up oil cylinder max stroke900mm Moving motor power0.85/1.1kw2 Pump station motor power11kw Roller conveyor motor power(single machine no roller conveyou)2.2kw Roller conveyor conveying speed9.3m/min Above are our standard model,it can be designed and manufactured according to customers request