Automatic line for bending and welding of stainless steel pipes, maximum length of 1000mm and diameters between 130mm and 240mm. The equipment is composed of: an automatic interlocking bench of the bending unit with an identification system of sheet length, allowing the selfadjustment of the equipment; a two-roll bending unit; a pick-up unit to take the piece to the welding area; a longitudinal welding seamer where operations of gauging, alignment of the tube and plasma welding take place; an automatic unloading bench.