A more recent edition of NAICS is available.
2017 Edition

national industry 331110

Iron and Steel Mills and Ferroalloy Manufacturing

Overview

This industry comprises establishments primarily engaged in one or more of the following: (1) direct reduction of iron ore; (2) manufacturing pig iron in molten or solid form; (3) converting pig iron into steel; (4) making steel; (5) making steel and manufacturing shapes (e.g., bar, plate, rod, sheet, strip, wire); (6) making steel and forming pipe and tube; and (7) manufacturing electrometallurgical ferroalloys. Ferroalloys add critical elements, such as silicon and manganese for carbon steel and chromium, vanadium, tungsten, titanium, and molybdenum for low- and high-alloy metals. Ferroalloys include iron-rich alloys and more pure forms of elements added during the steel manufacturing process that alter or improve the characteristics of the metal.

The immediate parent of national industry 331110 is international industry 33111: Iron and Steel Mills and Ferroalloy Manufacturing

2017 NAICS Edition Cross References

  • Operating coke ovens--are classified in U.S. Industry 324199, All Other Petroleum and Coal Products Manufacturing;
  • Manufacturing nonferrous superalloys, such as cobalt or nickel-based superalloys--are classified in U.S. Industry 331492, Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum);
  • Manufacturing concrete reinforcing bar by rolling and drawing steel from purchased steel--are classified in U.S. Industry 331221, Rolled Steel Shape Manufacturing; and
  • Manufacturing fabricated structural metal products from concrete reinforcing bars and fabricated bar joists--are classified in U.S. Industry 332312, Fabricated Structural Metal Manufacturing.

Sub-Descriptions

  1. 331110 - Armor plate made in iron and steel mills
  2. 331110 - Axles, rolled or forged, made in iron and steel mills
  3. 331110 - Balls, steel, made in iron and steel mills
  4. 331110 - Bars, concrete reinforcing (rebar) made in steel mills
  5. 331110 - Bars, iron, made in iron and steel mills
  6. 331110 - Bars, steel, made in iron and steel mills
  7. 331110 - Billets, steel, made in iron and steel mills
  8. 331110 - Blackplate made in iron and steel mills
  9. 331110 - Blast furnaces
  10. 331110 - Blooms, steel, made in iron and steel mills
  11. 331110 - Car wheels, rolled steel, made in iron and steel mills
  12. 331110 - Coke oven products made in iron and steel mills
  13. 331110 - Concrete reinforcing bar (rebar) made in iron and steel mills
  14. 331110 - Direct reduction of iron ore
  15. 331110 - Electrometallurgical ferroalloy manufacturing
  16. 331110 - Electrometallurgical steel manufacturing
  17. 331110 - Fence posts, iron or steel, made in iron and steel mills
  18. 331110 - Ferroalloys manufacturing
  19. 331110 - Ferrochromium manufacturing
  20. 331110 - Ferromanganese manufacturing
  21. 331110 - Ferromolybdenum manufacturing
  22. 331110 - Ferrophosphorus manufacturing
  23. 331110 - Ferrosilicon manufacturing
  24. 331110 - Ferrotitanium manufacturing
  25. 331110 - Ferrotungsten manufacturing
  26. 331110 - Ferrovanadium manufacturing
  27. 331110 - Flakes, iron or steel, made in iron and steel mills
  28. 331110 - Flats, iron or steel, made in iron and steel mills
  29. 331110 - Forgings, iron or steel, made in iron and steel mills
  30. 331110 - Frogs, iron or steel, made in iron and steel mills
  31. 331110 - Galvanizing metals and metal formed products made in iron and steel mills
  32. 331110 - Gun forgings made in iron and steel mills
  33. 331110 - High percentage nonferrous alloying elements (i.e., ferroalloys) manufacturing
  34. 331110 - Hoops made in iron and steel mills
  35. 331110 - Hoops, galvanized, made in iron and steel mills
  36. 331110 - Hot-rolling iron or steel products in iron and steel mills
  37. 331110 - Ingot made in iron and steel mills
  38. 331110 - Iron ore recovery from open hearth slag
  39. 331110 - Iron sinter made in iron and steel mills
  40. 331110 - Iron, pig, manufacturing
  41. 331110 - Manganese metal ferroalloys manufacturing
  42. 331110 - Mesh, wire, made in iron and steel mills
  43. 331110 - Mini-mills, steel
  44. 331110 - Molybdenum silicon ferroalloys manufacturing
  45. 331110 - Nut rods, iron or steel, made in iron and steel mills
  46. 331110 - Paste, iron or steel, made in iron and steel mills
  47. 331110 - Pig iron manufacturing
  48. 331110 - Pilings, iron or steel plain sheet, made in iron and steel mills
  49. 331110 - Pipe, iron or steel, made in iron and steel mills
  50. 331110 - Plate, iron or steel, made in iron and steel mills
  51. 331110 - Powder, iron or steel, made in iron and steel mills
  52. 331110 - Rail joints and fastenings made in iron and steel mills
  53. 331110 - Railroad crossings, iron or steel, made in iron and steel mills
  54. 331110 - Rails rerolled or renewed in iron and steel mills
  55. 331110 - Rails, iron or steel, made in iron and steel mills
  56. 331110 - Rods, iron or steel, made in iron and steel mills
  57. 331110 - Rounds, tube, steel, made in iron and steel mills
  58. 331110 - Sheet pilings, plain, iron or steel, made in iron and steel mills
  59. 331110 - Sheets, steel, made in iron and steel mills
  60. 331110 - Shell slugs, steel, made in iron and steel mills
  61. 331110 - Silicomanganese ferroalloys manufacturing
  62. 331110 - Skelp, iron or steel, made in iron and steel mills
  63. 331110 - Slab, steel, made in iron and steel mills
  64. 331110 - Spiegeleisen ferroalloys manufacturing
  65. 331110 - Spike rods made in iron and steel mills
  66. 331110 - Sponge iron
  67. 331110 - Stainless steel made in iron and steel mills
  68. 331110 - Steel balls made in iron and steel mills
  69. 331110 - Steel manufacturing
  70. 331110 - Steel mill products (e.g., bar, plate, rod, sheet, structural shapes) manufacturing
  71. 331110 - Steel mills
  72. 331110 - Steel, from pig iron, manufacturing
  73. 331110 - Strip, galvanized iron or steel, made in iron and steel mills
  74. 331110 - Strip, iron or steel, made in iron and steel mills
  75. 331110 - Structural shapes, iron or steel, made in iron and steel mills
  76. 331110 - Superalloys, iron or steel, manufacturing
  77. 331110 - Template, made in iron and steel mills, manufacturing
  78. 331110 - Terneplate made in iron and steel mills
  79. 331110 - Ternes, iron or steel, long or short, made in iron and steel mills
  80. 331110 - Tie plates, iron or steel, made in iron and steel mills
  81. 331110 - Tin-free steel made in iron and steel mills
  82. 331110 - Tinplate made in iron and steel mills
  83. 331110 - Tool steel made in iron and steel mills
  84. 331110 - Tube rounds, iron or steel, made in iron and steel mills
  85. 331110 - Tube, iron or steel, made in iron and steel mills
  86. 331110 - Tubing, seamless steel, made in iron and steel mills
  87. 331110 - Tubing, wrought iron or steel, made in iron and steel mills
  88. 331110 - Well casings, iron or steel, made in iron and steel mills
  89. 331110 - Wheels, car and locomotive, iron or steel, made in iron and steel mills
  90. 331110 - Wire products, iron or steel, made in iron and steel mills
  91. 331110 - Wrought iron or steel pipe and tubing made in iron and steel mills

History

The NAICS editions in which this code was present are indicated below. In the event that a code was changed from the prior edition the equivalent value in that edition is provided for reference.

Edition Existed Equivalent Value
2002 331111 331112
2007 331111 331112
2012 331110
2017 331110
2022 331110

Standard Industrial Classification (SIC) Mappings

  1. 3312 - Steel Works, Blast Furnaces (Including Coke Ovens), and Rolling Mills
  2. 3313 - Electrometallurgical Products, Except Steel
  3. 3399 - Primary Metal Products, Not Elsewhere Classified

Insurance Industry Mappings

The US Property and Casualty Insurance Industry may use the following classification descriptions which might encompass national industry 331110, Iron and Steel Mills and Ferroalloy Manufacturing:

  1. autombile wheel manufacturing
  2. automobile wheel manufacture metal not cast
  3. automobile wheel manufacturing
  4. automobile wheel manufacturing metal not cast
  5. blast furnace operation
  6. blast furnace operation and
  7. car manufacture railroad
  8. car wheel manufacturing railroad
  9. chain manufacturing forged
  10. coke manufacturing
  11. electrometallurgical ferroalloy product manufacturing
  12. electrometallurgical product except steel
  13. galvanizing or tinning
  14. galvanizing or tinning not electrolytic
  15. galvanizing or tinning not otherwise classified
  16. iron and steel mill and ferroalloy manufacturing
  17. iron or steel manufacturing rolling mill
  18. iron or steel manufacturing steelmaking
  19. manufacturing
  20. metal extraction or refining electrometallurgical process
  21. metal extraction or refining of ferrous metal blast furnace
  22. metal extraction or refining of ferrous metal blast furnace or other pyrometallurgical process
  23. metal extraction or refining of ferrous metal blast furnace orotherpyrometallurgical process
  24. ore milling
  25. ore milling or processing
  26. pipe or tube manufacturing
  27. pipe or tube manufacturing iron or steel
  28. pipe or tube manufacturing metal
  29. primary metal manufacturing
  30. primary metal product not otherwise classified
  31. steel making or processing
  32. steel mill
  33. steel work blast furnace including coke oven and rolling mill
  34. tinning or galvanizing not electrolytic
  35. wheel manufacturing
  36. wire good manufacture not otherwise classified
  37. wire good manufacturing
  38. wire good manufacturing not otherwise classified

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