A panel for portoni industrial comprises a rectangular chassis constituted from outlined metallic (5) having a cross section substantially to C, opened towards the space comprised between two sheets of covering (10). The two sides parallels (6) of the outlined one (5) introduce their edges of refolded extremities (7) towards the inside and the third side (8) perpendicular to such sides parallels introduces a rabbet (9) for an estate element. In correspondence of the angles of the chassis the connection between the outlined ones is realized by means of a angular element of comprising splice two log (20a, 20b) inseribili in the outlined extremities of the respective ones and a part centers them (22) that form rest for everyone of the outlined ones and introduce a rabbet for the insertion of the estate packing. Bottom (25) of everyone of the two log (20a, 20b) is fortified of a hole threaded for the implantation by means of a screw (27) of the respective one outlined with the interposizione of a slab of serration (28). All the panel, included outlined horizontal, vertical and the inside of the elements angle irons, are filled up of material expanded plastics (11) obtained for preferibilmente poliuretanica foam injection. (Figure 1)