... as transmission shaft, axle, hydraulic ram, solar water heater, electric water heater, pressure container, gas tank and so on. Work piece is rotated by ... MAG welder, plasma welder, laser welder and so on. Water cooling for torch and cooper plate is optional. Picture 1 ... . Overview of entire machinePicture 2. Torch lifting transmissionPicture 3. Water cooled MIG/MAG torch, other TIG, plasma, laser torch ...