Center of the automatic welding machine by the operator, automatic submerged arc welding machine, welding roller stand (or welding positioner), then track and monitor various position welding of metal containers, metal welded structure, widely used in pressure vessel, boiler shipbuilding, electric power, chemical, petroleum engineering, machinery, plant construction and many other industries. ZT series can be used as a welding operation machine supporting the automatic welding the detection assembly Simplified parts the use of special equipment, can also be used alone as a main principle is to use the the welding body weight using a clamp holder automatically adjusts the suitable diameter welded body in a variety of specifications. Welded frame main technical parameters: Model applicable the welding cylinder diameter beams effective weld length column minimum the largest QLH-Ⅰ fixed welding operation frame 500 3000 6000 4500 QLH-Ⅱ fixed 360 ° rotary welding operation frame 500 4000 6000 5500 QLH-Ⅲ fixed 360 ° Rotating with flat-screen car welding operation frame 500,500,060,006,500