FIELD: construction.
SUBSTANCE: invention relates to the butt joint of pre-insulated pipes and formed parts, which comprises interconnected internal working pipes and the clutch fixed overlapping on the outer jacket pipes, made of translucent plastic. The clutch is made heat-shrinkable, of translucent plastic, and between the clutch and the outer jacket pipes the adhesive material different in colour from the colour of the jacket pipe is located.
EFFECT: preserving the insulation properties and characteristics in the places of butt joints during a long period of time and increasing the life of the joint and of the pipeline systems, respectively.
10 cl, 5 dwg
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