METHOD OF INTERNAL CORROSION PROTECTION OF WELDED JOINTS OF PIPES PROVIDED WITH INTERNAL PROTECTIVE COAT

摘要

FIELD: erection of piping systems. SUBSTANCE: bandage impregnated in sealing compound is pressed to inner surfaces of pipes in their joint area; use may be made of multi-layer bandage each layer of which is impregnated separately. Zone of welded joint is heated to facilitate hardening of compound impregnating the bandage. EFFECT: enhanced reliability of welded joints due to improved corrosion protection. 3 clo