FIELD: pipelines for transportation of petroleum extracted from sea oil wells. SUBSTANCE: as an insulating material velan resin is used which is a heteropolysaccaride in the form of its 0.25% mixture with ethylene glycol having viscosity more than 2500 cPs as measured on a Bruckfield LVT viscosimeter at 60 r/min. Resin also contains EDTA as a complex in amount ranging from 500 to 2000 ppm. EFFECT: new insulation composition proposed. 8 cl, 1 dwg
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