Top and bottom surfaces: Constructed from galvanized color-coated steel sheets with a thickness of 0.4–0.8 mm. Depending on specific client requirements, Al-Zn (aluminum-zinc) alloy-coated steel sheets or standard galvanized steel sheets may also be used. The steel sheets are first roll-formed by a shaping machine before being bonded with the rock wool core.
Rock wool core: Composed of rock wool blocks with a density of 120 kg/m³, laid in a staggered pattern. The fibers are oriented perpendicular to the top and bottom surfaces of the panel, filling the entire interior space. The rock wool blocks are bonded to each other, as well as to the top and bottom steel sheets, using a high-strength foaming adhesive to form a cohesive, integrated structure. Advanced manufacturing processes ensure an exceptionally strong bond between the high-density rock wool insulation and the inner surfaces of the metal sheets, providing the rock wool sandwich panel with excellent structural rigidity.