Composite tubing product and method of making same

B - Operations – Transporting – 29 – C

Patent

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B29C 47/02 (2006.01) B32B 1/08 (2006.01) F16L 58/10 (2006.01)

Patent

CA 1102717

Abstract of The Disclosure An elongate deformable tube for use in the conveyance of fluids and/or fluid transmission signals under pressure having a hose therethrough enclosed by a composite annular wall comprising a seamless or welded and drawn inner tubular shaped layer made from a metallic material and an outer tubular shaped layer made from a polymeric material. The walls of bot? the inner and outer layers are substantially uniform in radial thickness around their circumferences and the outer polymeric layer is preferably formed about the inner layer by means of an extrusion process. The inner and outer layers are preferably bonded together by means of an extruded polymeric adhesive interposed therebetween and the outer diameter of the outer layer is sized, during the process of making the tube, such that the tube can be attached, without dimensional alteration, to fittings standardly used to couple equivalently dimensioned tubes having a singular polymeric or metallic wall.

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