| [331210] Iron and Steel Pipe and Tube Manufacturing from Purchased Steel |
| [332311] Prefabricated Metal Building and Component Manufacturing |
| [332312] Fabricated Structural Metal Manufacturing |
| [332313] Plate Work Manufacturing |
| [332510] Hardware Manufacturing |
| [332710] Machine Shops |
| [332721] Precision Turned Product 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 |
| [333298] All Other Industrial Machinery Manufacturing |
| [333412] Industrial and Commercial Fan and Blower Manufacturing |
| [333414] Heating Equipment (except Warm Air Furnaces) Manufacturing |
| [333512] Machine Tool (Metal Cutting Types) Manufacturing |
| [333513] Machine Tool (Metal Forming Types) Manufacturing |
| [333515] Cutting Tool and Machine Tool Accessory Manufacturing |
| [333518] Other Metalworking Machinery Manufacturing |
| [333611] Turbine and Turbine Generator Set Units Manufacturing |
| [333618] Other Engine Equipment Manufacturing |
| [333911] Pump and Pumping Equipment Manufacturing |
| [333912] Air and Gas Compressor Manufacturing |
| [333913] Measuring and Dispensing Pump Manufacturing |
| [333996] Fluid Power Pump and Motor Manufacturing |
| [333999] All Other Miscellaneous General Purpose Machinery Manufacturing |
| [334513] Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables |
| [336412] Aircraft Engine and Engine Parts Manufacturing |
| [336413] Other Aircraft Parts and Auxiliary Equipment Manufacturing |