Major Group 33: Primary Metal Industries
Industry Group 331: Steel Works, Blast Furnaces, And Rolling And Finishing Mills
- 3312 Steel Works, Blast Furnaces (Including Coke Ovens), and Rolling Mills
- 3313 Electrometallurgical Products, Except Steel
- 3315 Steel Wiredrawing and Steel Nails and Spikes
- 3316 Cold-Rolled Steel Sheet, Strip, and Bars
- 3317 Steel Pipe and Tubes
- 3321 Gray and Ductile Iron Foundries
- 3322 Malleable Iron Foundries
- 3324 Steel Investment Foundries
- 3325 Steel Foundries, Not Elsewhere Classified
- 3331 Primary Smelting and Refining of Copper
- 3334 Primary Production of Aluminum
- 3339 Primary Smelting and Refining of Nonferrous Metals, Except Copper and Aluminum
- 3351 Rolling, Drawing, and Extruding Of Copper
- 3353 Aluminum Sheet, Plate, and Foil
- 3354 Aluminum Extruded Products
- 3355 Aluminum Rolling and Drawing, Not Elsewhere Classified
- 3356 Rolling, Drawing, and Extruding of Nonferrous Metals, Except Copper and Aluminum
- 3357 Drawing and Insulating of Nonferrous Wire