Seam welder is used to weld a short piece of coil into pipe. FUGE designs the seam welder applicable to various material. It's also installed with auto wire feeder for thick pipe, and also configured with option for auto alignment device as to help operator handling the seam welder easier. Seam welder contains many different models based on different welding length. The longer the seam welder is, the stronger the welding shaft will be, and then the bigger its minimum applicable diameter.