Abstract: A multilayer tube for fluid transportation may include, from an interior of the multilayer tube to an exterior of the multilayer tube: an inner layer including at least one polyamide in admixture with at least one elastomer; an adhesive layer; and/or a layer including at least one polyolefin. In a system for transporting fluids at medium pressure, a plurality of multilayer tubes may be joined together by electro-soldered joints formed by the at least one polyamide. A multilayer tube may be used for transporting hydrocarbons within an extraction site, from the extraction site to a refinery, or within the extraction site and from the extraction site to the refinery. A multilayer tube may be used for transporting water, distributing the water, or transporting and distributing the water.