FIELD: technological processes; transportation.
SUBSTANCE: pipe with filler including water is frozen and deformed by pipe-bending device. Filler includes water-soluble salt at concentration necessary to provide required durability characteristics to physical and mechanical properties of filler after its freezing. Filler freezing temperature should exclude thin-wall pipe deformation at volumetric expansion coefficient of filler brought to zero depending on salt concentration.
EFFECT: enhanced efficiency.
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SU1165509A1 |
