| [331111] Iron and Steel Mills |
| [331112] Electrometallurgical Ferroalloy Product Manufacturing |
| [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 |
| [331411] Primary Smelting and Refining of Copper |
| [331419] Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum) |
| [331421] Copper Rolling, Drawing, and Extruding |
| [331422] Copper Wire (except Mechanical) Drawing |
| [331423] Secondary Smelting, Refining, and Alloying of Copper |
| [331491] Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding |
| [331492] Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum) |
| [331521] Aluminum Die-Casting Foundries |
| [331522] Nonferrous (except Aluminum) Die-Casting Foundries |
| [331524] Aluminum Foundries (except Die-Casting) |
| [331525] Copper Foundries (except Die-Casting) |
| [331528] Other Nonferrous Foundries (except Die-Casting) |
| [332112] Nonferrous Forging |
| [332116] Metal Stamping |
| [332117] Powder Metallurgy Part Manufacturing |
| [332313] Plate Work Manufacturing |
| [332321] Metal Window and Door Manufacturing |
| [332322] Sheet Metal Work Manufacturing |
| [332410] Power Boiler and Heat Exchanger Manufacturing |
| [332420] Metal Tank (Heavy Gauge) Manufacturing |
| [332431] Metal Can Manufacturing |
| [332439] Other Metal Container Manufacturing |
| [332611] Spring (Heavy Gauge) Manufacturing |
| [332612] Spring (Light Gauge) Manufacturing |
| [332618] Other Fabricated Wire Product Manufacturing |
| [332710] Machine Shops |
| [332721] Precision Turned Product Manufacturing |
| [332911] Industrial Valve Manufacturing |
| [332913] Plumbing Fixture Fitting and Trim Manufacturing |
| [332919] Other Metal Valve and Pipe Fitting Manufacturing |
| [332991] Ball and Roller Bearing Manufacturing |
| [332996] Fabricated Pipe and Pipe Fitting Manufacturing |
| [332999] All Other Miscellaneous Fabricated Metal Product Manufacturing |
| [333132] Oil and Gas Field Machinery and Equipment Manufacturing |
| [333512] Machine Tool (Metal Cutting Types) Manufacturing |
| [333513] Machine Tool (Metal Forming Types) Manufacturing |
| [333611] Turbine and Turbine Generator Set Units Manufacturing |
| [333912] Air and Gas Compressor Manufacturing |
| [333913] Measuring and Dispensing Pump Manufacturing |
| [333994] Industrial Process Furnace and Oven Manufacturing |
| [334412] Bare Printed Circuit Board Manufacturing |
| [334413] Semiconductor and Related Device Manufacturing |
| [334414] Electronic Capacitor Manufacturing |
| [334415] Electronic Resistor Manufacturing |
| [334416] Electronic Coil, Transformer, and Other Inductor Manufacturing |
| [334417] Electronic Connector Manufacturing |
| [334418] Printed Circuit Assembly (Electronic Assembly) Manufacturing |
| [334419] Other Electronic Component Manufacturing |
| [335211] Electric Housewares and Household Fan Manufacturing |
| [335311] Power, Distribution, and Specialty Transformer Manufacturing |
| [335312] Motor and Generator Manufacturing |
| [335313] Switchgear and Switchboard Apparatus Manufacturing |
| [335929] Other Communication and Energy Wire Manufacturing |
| [335931] Current-Carrying Wiring Device Manufacturing |
| [336411] Aircraft Manufacturing |
| [336412] Aircraft Engine and Engine Parts Manufacturing |
| [336413] Other Aircraft Parts and Auxiliary Equipment Manufacturing |
