FIELD: laying and operation of piping systems. SUBSTANCE: metal pipe with inner coating contains cylindrical shells inside ends of corrosion resistant steel featuring higher electrolytic potential than corresponding potential of pipe metal. Shells are claded by cylindrical envelopes over inner surface, including ends of pipe inner internal coating. Said cylindrical envelopes are made of metal with value of standard electrolytic potential not exceeding pipe metal potential value. Cladding cylindrical envelopes are made of metal coated with zinc or aluminum-based layer. Inner ends of cylindrical envelopes in contact to each other are isolated by sealant. EFFECT: improved reliability of pipeline. 3 cl, 1 dwg
