Gas recirculation pipe of a combustion engine and method for manufacturing said pipe

Gas recirculation pipe (1) of a combustion engine comprising a conduit (2) which is suitable for said gas to circulate therein. The conduit (2) comprises an outer surface (3) that is at least partially covered by an insulating material (4) to thermally insulate the recirculation pipe (1). Said insulating material (4) is overmolded on said conduit (2). The method for manufacturing said gas recirculation pipe (1) comprises an initial step in which the conduit (2) is introduced in a mold cavity, a mixing step in which a base and a reagent are mixed, a filling step in which said mixture is taken to the mold cavity, and a curing and extraction step in which the pipe (1) is extracted from the mold cavity after the curing time.