FIELD: protection of pipe lines against corrosion in erection and repair. SUBSTANCE: pipe line open at both ends is dried with heated air, its inner surface is cleaned with abrasive material, after which pipe line is heated and rarefaction is created in it. Then coating material is introduced in pipe line which, gets deposit to wall of pipe line and is hardened. EFFECT: easy application of coat; avoidance of toxic effect on environment. 21 cl
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