Automatic welding of circular welding seam in barrel and axis. ModelHF1000HF2000HF2500HF3000HF3500Workpiece Length(mm)10002000250030003500Workpiece ... -20-20-20-2It is used for automatic welding of circular welding seam in barrel and axis,such as transmission shah ... axle,hydraulic ram,puncher,position stem,pressure container,water tank,tube union,flange,muffler,air reservoir,air compressor,etc.Welder is ...