By seam monitoring and seam milling system,welding manipulator(welding column and boom)is able to better satisfy welding requirements on high quality & efficiency. It can realize automatic longitudinal and circumferential seam welding for vessels. Suitable for industries covering wind power building, power station construction and etc. Three types are avilable: mini-type, medium type, heavy-duty type Welding technology: MIG/single arc& wire SAW/ multi-arc & wire SAW/ Coll wire SAW