FIELD: pipe-line joints. SUBSTANCE: branch-pipes are provided with flanges. A coil made of fibre glass plastic pipe is glued inside the groove of the branch-pipes. Dielectric fibre glass plastic packing ring is placed in the space between flanges. Rubber sealing rings are placed in grooves. Steel stub bolts with nuts are insulated from other flanges by means of dielectric inserts. EFFECT: joint maintains dielectric separation of one pipe-line member from another and protects them against external corrosion, enhanced efficiency and service life. 1 dwg
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