FIELD: pipe line transport. SUBSTANCE: funnels wherein ring inserts are received are made at the ends of pipes. A coating layer is applied to the inner side of the pipe. The funnels are welded together. Before mounting the ring inserts the inner sides of the funnels are coated with a material of high heat capacity. After applying the coating layer it is flanged to the face surfaces of the inserts. Before welding a ring made of a net is mounted to overlap the face surfaces of the inserts. EFFECT: improved quality of joint. 1 dwg
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