FIELD: pipeline engineering.
SUBSTANCE: combined pipe comprises central pipe for flowing gas or liquid, shell coaxially mounted to the central -pipe to define a ring space whose diameter is greater than that of the outer diameter of the central pipe and length lesser than the length of the central pipe, bearing guiding member that is composed of distribute concentrators secured to the outer surface of the central pipe, and ballast agent that fills the ring space. The shell is a spiral-shaped member made of zinced steel belt.
EFFECT: improved design.
8 cl, 5 dwg
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