FIELD: pipeline engineering.
SUBSTANCE: heat insulated pipe comprises pressure-tight piping shell made of a composition material. The outer side of the shell is provided with a heat insulation made of a material made of heat insulated base of foamed solidified material and filler made of particles of fiber glass mixed with sand. The length of each particle ranges from 1 to 5 cm. The foamed solidified material is made of foamed polyurethane.
EFFECT: simplified structure.
5 cl, 6 dwg
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