HSN7308STRUCTURES (EXCLUDING PREFABRICATED BUILDINGS OF HEADING 9406) AND PARTS OF STRUCTURES (FOR EXAMPLE, BRIDGES AND BRIDGE-SECTIONS, LOCK-GATES, TOWERS, LATTICE MASTS, ROOFS, ROOFING FRAME-WORKS, DOORS AND WINDOWS AND THEIR FRAMES AND THRESHOLDS FOR DOORS, SHUTTERS, BALUSTRADES, PILLARS AND COLUMNS), OF IRON OR STEEL, PLATES, RODS, ANGLES, SHAPES, SECTIONS, TUBES AND THE LIKE, PREPARED FOR USE IN STRUCTURES, OF IRON OR STEEL
HSN730810BRIDGES AND BRIDGE-SECTIONS
HSN73089010BEAMS, CHANNELS, PILLARS AND GIRDERS PREPARED FOR USE IN STRUCTURES
HSN730890OTHER :
HSN730830DOORS, WINDOWS AND THEIR FRAMES AND THRESHOLDS FOR DOORS
SAC9987Maintenance, repair and installation (except construction) services
SAC998873Other fabricated metal product manufacturing and metal treatment services
SAC998731Installation services of fabricated metal products, except machinery and equipment
SAC440410WORKS CONTRACT SERVICES
SAC440282FORWARD CONTRACT SERVICES