FIELD: conveyance of materials. SUBSTANCE: pipes made mainly of polymers have a strength reinforcer in the form of a metal mesh reinforcing cage. The cage uses longitudinal reinforcement bars and lateral ones wound on them, fastened in the points of their intersection by welding. The longitudinal reinforcement bars are in a helical line. The angle of helical line of longitudinal reinforcement does not exceed the angle of helical line of lateral reinforcement. EFFECT: enhanced reliability. 2 dwg
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