FIELD: pickling of metals with chemical means; applicable in continuous jet pickling of pipe internal surfaces. SUBSTANCE: device has a stationary shaft with drive of reciprocating rotation and tube plates installed on it and provided with sealing plugs for fixing of treated pipes; system of autonomous and intermediate vessels for treatment solutions with pipelines, switches, valves and pump. Sealing plug has flexible and compressing members. EFFECT: prompt and easy readjustment of device for different sizes of pipes and complex treatment cycle for one device setting. 6 cl, 3 dwg
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