FIELD: manufacture of enameled pipes connected in lines by welding. SUBSTANCE: outer surface of bushes prepared for enameling is coated with enamel frit, then bushes are introduced into end sections of pipes, frit is applied to inner surfaces of pipes and enabling is effected at temperature of 850 to 950 C depending on composition of frit, after which ends of pipes are connected by means of fusion welding. EFFECT: enhanced reliability. 3 cl, 1 dwg, 2 tbl
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