ALUMINIUM STRUCTURES(EXCLUDING PREFABRICATEDBUILDINGS OF HEADING 9406) ANDPARTS OF STRUCTURES (FOREXAMPLE, BRIDGES AND BRIDGESECTIONS, TOWERS, LATTICE MASTS,ROOFS, ROOFING FRAMEWORKS,DOORS AND WINDOWS AND THEIRFRAMES AND THRESHOLDS FORDOORS, BALUSTRADES, PILLARS ANDCOLUMNS); ALUMINIUM PLATES,RODS, PROFILES, TUBES AND THELIKE, PREPARED FOR USE IN STRUCTURES.
HS codes falls under this category.