FIELD: machine building.
SUBSTANCE: multilayer pipe includes external 1 and internal 2 layers, between which intermediate layer 3 adjacent to external 1 and internal 2 layers through adhesive layers is located. External 1 and internal 2 layers are made from copolymer of polypropene, and intermediate layer 3 is made from copolymer of ethyl vinyl alcohol as base with pieces of fibres as filler.
EFFECT: effective gas insulation of multilayer pipe at simplification of its manufacturing technology owing to using only extrusion equipment and equipment for application of adhesive material between internal, intermediate and external layers, which allows achieving the cheapening of pipe manufacture, and its high operating properties allowing to minimise the pipe material consumption.
8 cl, 1 dwg
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