FIELD: machine building.
SUBSTANCE: tube-case is of cellular structure consisting of net out of high strength material and solid polymer cover. Also, the net is made out of steel and is connected at intersections, while a polymer cover fills meshes of the net to depth less, than net thickness. The net can be made out of corrosion resistant steel wire, out of wire with corrosion resistant coating, out of spring wire (including the one with corrosion resistant coating) or to be solid metal cut-out-drawn (including zinc-coated). Polymer coating is made out of polymer thermo-plastic material, poly-ethylene of low pressure and thickness of 5-8 mm. It fills meshes to depth less, than net thickness facilitating reliable adhesion of internal surface of the tube-case with a functional material.
EFFECT: increased rigidity of tube-case of cellular structure.
8 cl, 3 dwg
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