Major Group: 33—Primary Metal Industries

This major group includes establishments engaged in smelting and refining ferrous and nonferrous metals from ore, pig, or scrap; in rolling, drawing, and alloying metals; in manufacturing castings and other basic metal products; and in manufacturing nails, spikes, and insulated wire and cable. This major group includes the production of coke. Establishments primarily engaged in manufacturing metal forgings or stampings are classified in Industry Group 346.

Codes Titles Total Marketable US Businesses
Industry Group 331: Steel Works, Blast Furnaces, And Rolling And Finishing Mills
3312Steel Works, Blast Furnaces (Including Coke Ovens), and Rolling Mills2,437
3313Electrometallurgical Products, Except Steel62
3315Steel Wiredrawing and Steel Nails and Spikes743
3316Cold-Rolled Steel Sheet, Strip, and Bars149
3317Steel Pipe and Tubes566
Industry Group 332: Iron And Steel Foundries
3321Gray and Ductile Iron Foundries444
3322Malleable Iron Foundries29
3324Steel Investment Foundries233
3325Steel Foundries, Not Elsewhere Classified317
Industry Group 333: Primary Smelting And Refining Of Nonferrous Metals
3331Primary Smelting and Refining of Copper33
3334Primary Production of Aluminum191
3339Primary Smelting and Refining of Nonferrous Metals, Except Copper and Aluminum457
Industry Group 334: Secondary Smelting And Refining Of Nonferrous Metals
3341Secondary Smelting and Refining of Nonferrous Metals312
Industry Group 335: Rolling, Drawing, And Extruding Of Nonferrous Metals
3351Rolling, Drawing, and Extruding Of Copper160
3353Aluminum Sheet, Plate, and Foil232
3354Aluminum Extruded Products378
3355Aluminum Rolling and Drawing, Not Elsewhere Classified216
3356Rolling, Drawing, and Extruding of Nonferrous Metals, Except Copper and Aluminum675
3357Drawing and Insulating of Nonferrous Wire584
Industry Group 336: Nonferrous Foundries (castings)
3363Aluminum Die-Castings253
3364Nonferrous Die-Castings, Except Aluminum171
3365Aluminum Foundries484
3366Copper Foundries386
3369Nonferrous Foundries, Except Aluminum and Copper291
Industry Group 339: Miscellaneous Primary Metal Products
3398Metal Heat Treating737
3399Primary Metal Products, Not Elsewhere Classified623