FIELD: metallurgy.
SUBSTANCE: glass fibre material impregnated by binding agent is wounded on the rotating self-feeding mandrel with further solidification of the binding agent of the formed pipe shell. Prior to forming of the pipe shell on the mandrel the internal sealing layer of the pipe shell is formed by feeding on the mandrel of the binding agent with further winding on the mandrel of the resin containing tape.
EFFECT: improved tightness of the non-metal pipes.
10 cl, 6 dwg
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