Element of hot gas conveying pipe and method for manufacturing such an element

The present invention mainly relates to a heat insulating member (200) of cylindrical shape for a fluid transport pipe comprising an envelope (204) of longitudinal axis (X), a heat insulation arranged in said envelope (204), the casing (204) having a deformable annular zone having a first (212.6) and second (212.12) cylindrical surfaces overlapping and slidable relative to each other in case of displacement imposed by thermal loads applied on said member (200) for isolating tuyauterie.La present invention also relates to a fluid transport pipe manufacturing process at high temperature, in particular hot gases from elements according to the present invention by insertion of a male connector of an element into a female connector of the other element.