Establishments primarily engaged in manufacturing hot metal, pig iron, and silvery pig iron from iron ore and iron and steel scrap; converting pig iron, scrap iron, and scrap steel into steel; and in hot-rolling iron and steel into basic shapes, such as plates, sheets, strips, rods, bars, and tubing. Merchant blast furnaces and by-product or beehive coke ovens are also included in this industry. Establishments primarily engaged in manufacturing ferro and nonferrous additive alloys by electrometallurgical processes are classified in Industry 3313.
| Armor plate, made in steel works or rolling mills | Rail joints and fastenings, made in steel works or rolling mills |
| Axles, rolled or forged: made in steel works or rolling mills | Railroad crossings, iron and steel: made in steel works or rolling mills |
| Bars, iron: made in steel works or rolling mills | Rails rerolled or renewed |
| Bars, steel made in steel works or hotrolling mills | Rails, iron and steel |
| Beehive coke oven products | Rods iron and steel made in steel works or rolling mills |
| Billets, steel | Sheet pilings, plain: iron and steel-made in steel works or rolling mills |
| Blackplate | Sheets, steel: made in steel works or hot-rolling mills |
| Blast furnace products | Shell slugs, steel made in steel works or rolling mills |
| Blooms | Skelp, iron and steel |
| Car wheels, rolled | Slabs, steel |
| Chemical recovery coke oven products | Spike rods, made in steel works or rolling mills |
| Coal gas, derived from chemical recovery coke ovens | Sponge iron |
| Coal tar crudes, derived from chemical recovery coke ovens | Stainless steel |
| Coke, produced in beehive ovens | Steel works producing bars, rods, plates, sheets, structural shapes, etc. |
| Coke, produced in chemical recovery coke ovens | Strips, galvanized iron and steel: made in steel works or rolling mills |
| Distillates, derived from chemical recovery coke ovens | Strips, iron and steel: made in steel works or hot-rolling mills |
| Fence posts, iron and steel: made in steel works or rolling mills | Structural shapes, iron and steel |
| Flats, iron and steel: made in steel works or hot-rolling mills | Tar, derived from chemical recovery coke ovens |
| Forgings, iron and steel made in steel works or rolling mills | Terneplate |
| Frogs, iron and steel: made in steel works or rolling mills | Ternes, iron and steel: long or short |
| Galvanized hoops, pipes, plates, sheets, and strips iron and steel | Tie plates, iron and steel |
| Gun forgings, iron and steel: made in steel works or rolling mills | Tin-free steel |
| Hoops, galvanized iron and steel | Tinplate |
| Hoops, iron and steel made in steel works or hot-rolling mills | Tool steel |
| Hot-rolled iron and steel products | Tube rounds |
| Ingots, steel | Tubes, iron and steel: made in steel works or rolling mills |
| Iron sinter, made in steel mills | Tubing, seamless: steel |
| Iron, pig | Well casings, iron and steel: made in steel works or rolling mills |
| Nut rods, iron and steel made in steel works or rolling mills | Wheels, car and locomotive: iron and steel—mitse |
| Pipe, iron and steel made in steel works or rolling mills | Wire products, iron and steel: made steel works or rolling mills |
| Plates, made in steel works or rolling mills | Wrought pipe and tubing, made in steel works or rolling mills |
| Codes |
Titles | Total Marketable US Businesses |
| 33120000 | Blast furnaces and steel mills | 778 |
| 33120100 | Chemicals and other products derived from coking | 36 |
| 33120103 | Beehive coke oven products | 5 |
| 33120104 | Coal gas, derived from chemical recovery coke ovens | 5 |
| 33120105 | Coal tar crudes, derived from chemical recovery coke ovens | 2 |
| 33120106 | Coke oven products (chemical recovery), nec | 4 |
| 33120107 | Coke, produced in beehive ovens | 0 |
| 33120108 | Coke, produced in chemical recovery coke ovens | 3 |
| 33120109 | Distillates, from chemical recovery coke ovens | 0 |
| 33120110 | Light oil crude, from chemical recovery coke ovens | 7 |
| 33120200 | Blast furnace and related products | 16 |
| 33120201 | Iron, pig | 2 |
| 33120202 | Sponge iron | 3 |
| 33120300 | Primary finished or semifinished shapes | 17 |
| 33120301 | Billets, steel | 7 |
| 33120302 | Blooms, steel | 0 |
| 33120303 | Ingots, steel | 2 |
| 33120304 | Slabs, steel | 12 |
| 33120400 | Structural and rail mill products | 23 |
| 33120401 | Rail joints or fastenings | 4 |
| 33120402 | Railroad crossings, steel or iron | 10 |
| 33120403 | Rails, rerolled or renewed | 2 |
| 33120404 | Rails, steel or iron | 37 |
| 33120405 | Structural shapes and pilings, steel | 115 |
| 33120500 | Bar, rod, and wire products | 43 |
| 33120501 | Bars and bar shapes, steel, cold-finished: own hot-rolled | 21 |
| 33120502 | Bars and bar shapes, steel, hot-rolled | 16 |
| 33120503 | Bars, iron: made in steel mills | 19 |
| 33120504 | Rods, iron and steel: made in steel mills | 37 |
| 33120505 | Wire products, steel or iron | 44 |
| 33120600 | Pipes and tubes | 66 |
| 33120601 | Pipes, iron and steel | 51 |
| 33120602 | Tubes, steel and iron | 45 |
| 33120700 | Plate, sheet and strip, except coated products | 16 |
| 33120701 | Armor plate | 24 |
| 33120702 | Plate, steel | 48 |
| 33120703 | Sheet or strip, steel, cold-rolled: own hot-rolled | 21 |
| 33120704 | Sheet or strip, steel, hot-rolled | 30 |
| 33120800 | Tool and die steel and alloys | 92 |
| 33120801 | Ferroalloys, produced in blast furnaces | 1 |
| 33120802 | Stainless steel | 346 |
| 33120803 | Tool and die steel | 178 |
| 33120900 | Wheels | 181 |
| 33120901 | Locomotive wheels, rolled | 2 |
| 33120902 | Wheels, locomotive and car: iron and steel | 10 |
| 33121000 | Coated or plated products | 13 |
| 33121001 | Black plate | 2 |
| 33121002 | Galvanized pipes, plates, sheets, etc.: iron and steel | 22 |
| 33121003 | Plate, terne | 0 |
| 33121004 | Tinplate | 8 |
| 33129901 | Axles, rolled or forged: made in steel mills | 9 |
| 33129902 | Electrometallurgical steel | 1 |
| 33129903 | Fence posts, iron and steel | 28 |
| 33129904 | Forgings, iron and steel | 34 |
| 33129905 | Hoops, iron and steel | 3 |
| 33129906 | Iron and steel products, hot-rolled | 64 |
| 33129907 | Sinter, iron | 8 |
| 33129908 | Tin-free steel | 1 |
| 33129909 | Well casings, iron and steel: made in steel mills | 1 |
