| [331210] Iron and Steel Pipe and Tube Manufacturing from Purchased Steel |
| [331221] Rolled Steel Shape Manufacturing |
| [331222] Steel Wire Drawing |
| [331312] Primary Aluminum Production |
| [331314] Secondary Smelting and Alloying of Aluminum |
| [331315] Aluminum Sheet, Plate, and Foil Manufacturing |
| [331316] Aluminum Extruded Product Manufacturing |
| [331319] Other Aluminum Rolling and Drawing |
| [331421] Copper Rolling, Drawing, and Extruding |
| [331422] Copper Wire (except Mechanical) Drawing |
| [331491] Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding |
| [332312] Fabricated Structural Metal Manufacturing |
| [332313] Plate Work Manufacturing |
| [332510] Hardware Manufacturing |
| [332710] Machine Shops |
| [332721] Precision Turned Product Manufacturing |
| [332999] All Other Miscellaneous Fabricated Metal Product Manufacturing |
