... in each kind of hot roller, beam steel roller, color metals roller,and grind coal roller, etc various works pieces to ... feeding speed, walk line speed, walk linedistance, weld bead width, weld bead pendulum wide, welding time, etc. Rollsurfacing welding machine ... :widelyused in each kind of hot roller, beam steel roller, color metals roller, andgrind coal roller, etc various works pieces to prepare ...