FIELD: construction, pipeline.
SUBSTANCE: invention is related to pipeline transport, in particular to gas and oil industry, and may be widely used in construction of main pipeline for transportation of hydrocarbons, and also in other fields. Pipeline comprises multi-layer pipes made of composite material, lock devices, every of which contains coupling also made of composite material, and fastening elements. Coupling is made as sectional and may be used many times.
EFFECT: higher reliability, durability, reduction of pipeline weight, simplification of pipeline assembly since no welding is involved.
15 cl, 5 dwg
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