ANTICORROSIVE PROTECTION METHOD FOR INNER AND OUTER SURFACES OF METAL PIPELINES BY ALTERNATING CURRENT APPLYING

摘要

FIELD: oil and gas industry.;SUBSTANCE: invention is related to anticorrosive protection method for inner and outer surfaces of metal pipelines in order to prevent corrosion damage of their inner and outer surfaces and may be used in oil and gas industry, communal services in order to reduce emergency rate during operation of pipeline transporting corrosive substances laid underground, on ground and above ground. The protected sections of the pipeline systems are impacted by current with infra-low frequency, at that pipeline sections are separated electrically by an insulating insert.;EFFECT: improved stability of the metal pipeline to internal and external corrosion.;3 dwg