Tubular element to transfer abrasive materials, in particular concrete, and method to manufacture it

A method to manufacture a tubular element for transferring abrasive materials such as concrete, inert materials or suchlike, wherein said tubular element comprises an internal tubular component and an external tubular component in contact with each other and coaxial to a central axis (X), wherein the method comprises a first step in which said internal tubular component is made of a material comprising chromium carbide, in pure form or in the form of an alloy or a mixture thereof, said first step being achieved by means of centrifugation technology, using a substantially cylindrical mold rotating around its own axis of rotation coincident with said central axis (X), and by casting the material comprising chromium carbide inside said mold, and wherein the method comprises a second step, after said first step, in which, in contact with the external surface of said internal tubular component, said external tubular component is made of a composite material in fibers impregnated with a resin.