Two-station robotic welding cell for plasma cutting and MIG welding of accessories (pipes, chip pipes…) on bottoms, for tanks of diameters between300 mm and 1250 mm, thickness from 1,5 mm to 5 mm. The equipment is composed of: two robots, one only for welding and the other for plasma cutting and for the positioning of the particular to be welded; of a two-station rotary table with support for the bottom and of a store for the particulars to be welded.