FIELD: tube manufacture. SUBSTANCE: lining layer of tube is made from thermosetting composite material on base of polymer-oligomer systems additionally containing plasticizer, filler, epoxy resin hardening initiator, viscosity regulator, stabilizers and dye. Composition consists of the following components, mass-parts: polyvinyl chloride, 0.35-0.42; vinyl chloride copolymer, 0.05-0.08; epoxy resin, 0.10-0.20; dicyanodiamide, 0.010-0.020; dioctyl phthalate, 0.10-0.20; talc, 0.10- 0.20; calcium stearate, 0.005-0.015; aerosil, 0.003-0.008 and dye, 0.001- 0.003. EFFECT: enhanced chemical stability; improved quality of tube.
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