FIELD: pipelines.
SUBSTANCE: invention relates to the structure of a waterproof joint of pipes with an outer concrete coating, containing two conductive pipes 1, connected by welding to form a weld seam 2. Welding seam 2 is closed with a heat shrink sleeve 3. Between the inner ends of the layers 5 of the concrete coating is placed sheet material 6. As sheet material 6 segments are used from a cement-sand concrete mixture. Cylindrical layers are collected from the segments. Outside the layer of sheet material 6 is a layer 7 of the cured compound. The casing 8 is fixed with straps 9.
EFFECT: increases connection reliability.
6 cl, 1 dwg
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