Straight seam welder for solar collector(50-100-150) This equipment is mainly used for the straight seam welding of solar collector and can weld minisize, square and round shape within 6mm.Meantime, it has the function of spot welding and is a kind of mult-functions welder. It can weld carbon steel, stainless steel, galvanized materials with fast speed and high precision. The welding effective length is 3500mm, power is 50-150kw, thickness is from 0.1 to1.2mm. The dimension of machine is 2x0.75x1.8M.