Technological equipment for the degreasing, pickling and passivation of the surfaces of steel semi-products, weldments, etc. Hydrochloric acid is used for pickling; phosphate-based products for passivation. The pots are arranged for the step-by-step procedure of the progress of the semi-product through the technological line, which thereby allows the setting of optimal times for the individual stages of the process. Maximum weight of the semi-product is 1000 kg; maximum dimensions are 800 x 800 x 6000 mm.
