Process for producing a profile comprising: - at least one longitudinal groove; - at least one recess (12, 16) longitudinally arranged to the profile and in parallel with said groove; - at least one longitudinal insert arranged internally to the profile, longitudinally with respect thereto, and in parallel with said groove and recess (12, 16), said longitudinal insert being formed with a plastic material different from the material with which the profile is formed and being completely surrounded by a thickness of the material with which the profile is formed, to compose a drilling area of the profile, the longitudinal insert being surrounded da walls which are configured to form at least one groove and/or at least one recess (12, 16) said process comprising the following steps: - a step of preparing the materials, wherein reinforcing fibers and a plastic material, as filaments, are prepared for obtaining a stratification of the materials in which the plastic material is surrounded by the reinforcing fibers; - a step of impregnating the reinforcing fibers and the plastic material with a resin which composes the polymeric matrix; - a step of introducing the impregnated material into a pultrusion die, in order to keep the plastic material surrounded by the reinforcing fibers; - a step of heating the die for obtaining the polymerization of the resin; - a step of continuously extracting the profile from the die, to form inside the extracted profile a longitudinal insert made of plastic material, surrounded by the reinforced material with the fibers, the step of continuously extracting the profile from the die being performed by keeping the filaments of plastic material longitudinally arranged along the extraction direction, to form inside the extracted profile the longitudinal insert made of plastic material, surrounded by the reinforced material; - a step of cutting the profile to make a profile of the desired length. - at least one longitudinal groove; - at least one recess (12, 16) longitudinally arranged to the profile and in parallel with said groove; - at least one longitudinal insert arranged internally to the profile, longitudinally with respect thereto, and in parallel with said groove and recess (12, 16), said longitudinal insert being formed with a plastic material different from the material with which the profile is formed and being completely surrounded by a thickness of the material with which the profile is formed, to compose a drilling area of the profile, the longitudinal insert being surrounded da walls which are configured to form at least one groove and/or at least one recess (12, 16) said process comprising the following steps: - a step of preparing the materials, wherein reinforcing fibers and a plastic material, as filaments, are prepared for obtaining a stratification of the materials in which the plastic material is surrounded by the reinforcing fibers; - a step of impregnating the reinforcing fibers and the plastic material with a resin which composes the polymeric matrix; - a step of introducing the impregnated material into a pultrusion die, in order to keep the plastic material surrounded by the reinforcing fibers; - a step of heating the die for obtaining the polymerization of the resin; - a step of continuously extracting the profile from the die, to form inside the extracted profile a longitudinal insert made of plastic material, surrounded by the reinforced material with the fibers, the step of continuously extracting the profile from the die being performed by keeping the filaments of plastic material longitudinally arranged along the extraction direction, to form inside the extracted profile the longitudinal insert made of plastic material, surrounded by the reinforced material; - a step of cutting the profile to make a profile of the desired length. - a step of preparing the materials, wherein reinforcing fibers and a plastic material, as filaments, are prepared for obtaining a stratification of the materials in which the plastic material is surrounded by the reinforcing fibers; - a step of impregnating the reinforcing fibers and the plastic material with a resin which composes the polymeric matrix; - a step of introducing the impregnated material into a pultrusion die, in order to keep the plastic material surrounded by the reinforcing fibers; - a step of heating the die for obtaining the polymerization of the resin; - a step of continuously extracting the profile from the die, to form inside the extracted profile a longitudinal insert made of plastic material, surrounded by the reinforced material with the fibers, the step of continuously extracting the profile from the die being performed by keeping the filaments of plastic material longitudinally arranged along the extraction direction, to form inside the extracted profile the longitudinal insert made of plastic material, surrounded by the reinforced material; - a step of cutting the profile to make a profile of the desired length.