34410 - Fabricated structural metal (Miscellaneous)
34411 - Fabricated structural metal for Buildings
3441121 - - Fabricated buildings: Steel (Sale): Industrial
3441122 - - Fabricated buildings: Steel (Sale): Commercial
3441123 - - Fabricated buildings: Steel (Sale): Residential
3441124 - - Fabricated buildings: Steel (Sale): Institutional, Medical & Religious
3441126 - - Fabricated buildings: Steel (Sale): Public & Educational
3441127 - - Fabricated buildings: Steel (Sale): Public utilities
3441141 - - Fabricated structural iron & Steel for Industrial buildings
3441142 - - Fabricated structural iron & Steel for Commercial buildings
3441143 - - Fabricated structural iron & Steel for Residential buildings
3441144 - - Fabricated structural iron & Steel for Institutional, Medical & Religious buildings
3441146 - - Fabricated structural iron & Steel for Public & Educational buildings
3441147 - - Fabricated structural iron & Steel for Public utilities
3441161 - - Fabricated buildings: Steel (Installation): Industrial
3441162 - - Fabricated buildings: Steel (Installation): Commercial
3441163 - - Fabricated buildings: Steel (Installation): Residential
3441164 - - Fabricated buildings: Steel (Installation): Institutional, Medical & Religious
3441166 - - Fabricated buildings: Steel (Installation): Public & Educational
3441167 - - Fabricated buildings: Steel (Installation): Public utilities
3441171 - - Fabricated buildings: Aluminum
3441199 - - Fabricated structural metal for Buildings (Miscellaneous)
34412 - Fabricated structural metal for Bridges
3441212 - - Fabricated bridges: Steel & Aluminum (Sale): Highway bridges, Trestles & Viaducts
3441216 - - Fabricated bridges: Steel & Aluminum (Sale): Railway bridges, Trestles & Viaducts
3441217 - - Fabricated bridges: Steel & Aluminum (Sale): Special purpose bridges
3441261 - - Fabricated bridges: Steel & Aluminum bridges, Trestles & Viaducts (Highway, Railway & Special purpose bridges)
3441299 - - Fabricated structural metal for Bridges (Miscellaneous)
34413 - Fabricated structural metal (General)
3441311 - - Structural Steel (Sale) for Ships, Boats & Barges
3441316 - - Fabricated structural iron & Steel for Ships, Boats & Barges
3441320 - - Fabricated structural iron & Steel for Transmission towers, Substations, Radio antenna towers & Supporting structures
3441323 - - Fabricated structural iron & Steel for Offshore oil & Gas platforms
3441326 - - Fabricated structural iron & Steel for Tunneling & Subway work
3441329 - - Fabricated structural iron & Steel for Aerospace & Defense
3441341 - - Structural Steel (Sale) for Transmission towers, Substations, Radio antenna towers & Supporting structures
3441353 - - Structural Steel (Sale) for Offshore oil & Gas platforms
3441355 - - Structural Steel (Sale) for Tunnelling & Subway work
3441357 - - Structural Steel (Sale) for Aerospace & Defense
3441358 - - Structural Steel (Sale): other Fabricated structural iron & Steel + Dam locks & Dam gates (excl pressure vessels & Storage tanks)
3441359 - - Other Fabricated structural iron & Steel
3441361 - - Structural Steel (Installation) for Ships, Boats & Barges
3441371 - - Structural Steel (Installation) for Transmission towers, Substations, Radio antenna towers & Supporting structures
3441382 - - Structural Steel (Installation) for Aerospace & Defense
3441383 - - Structural Iron & SSteel (Installation): other Fabricated structural iron & Steel + Dam locks & Dam gates (excl pressure vessels & Storage tanks)
3441384 - - Structural Aluminum for Ships, Boats, Barges, Transmission towers & other Structures (excl tanks, Fabricated metal buildings, etc.)
3441398 - - Structural metal other than Iron, Steel, or Aluminum
3441399 - - Fabricated structural metal (Miscellaneous)
3441XX0 - - Fabricated structural metal (Miscellaneous - Volume)
3441XX2 - - Fabricated structural metal (Miscellaneous - Speciality)