Hydroelectric Power Generation, Other Electric Power Generation, Electric Bulk Power Transmission and Control, Electric Power Distribution, Industrial Building Construction

Water Supply and Irrigation Systems, Steam and Air-Conditioning Supply, Plumbing, Heating, and Air-Conditioning Contractors, Plastics Pipe and Pipe Fitting Manufacturing, Rolled Steel Shape Manufacturing

Machine Shops, Precision Turned Product Manufacturing, Fabricated Pipe and Pipe Fitting Manufacturing, Oil and Gas Field Machinery and Equipment Manufacturing

Hand and Edge Tool Manufacturing, Other Metal Valve and Pipe Fitting Manufacturing, Fabricated Pipe and Pipe Fitting Manufacturing

Metal Stamping, Plate Work Manufacturing, Sheet Metal Work Manufacturing, Power Boiler and Heat Exchanger Manufacturing, Metal Tank (Heavy Gauge) Manufacturing

Industrial Building Construction, Commercial and Institutional Building Construction, Structural Steel and Precast Concrete Contractors, Other Foundation, Structure, and Building Exterior Contractors, Other Building Equipment Contractors

Power Boiler and Heat Exchanger Manufacturing, Metal Tank (Heavy Gauge) Manufacturing, Fabricated Pipe and Pipe Fitting Manufacturing, Oil and Gas Field Machinery and Equipment Manufacturing

Steel Wire Drawing, Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding, Other Fabricated Wire Product Manufacturing, Other Metal Valve and Pipe Fitting Manufacturing, Fabricated Pipe and Pipe Fitting Manufacturing

Rolled Steel Shape Manufacturing, Steel Wire Drawing, Iron and Steel Forging, Metal Stamping, Machine Shops

Metal Stamping, Fabricated Structural Metal Manufacturing, Sheet Metal Work Manufacturing, Ornamental and Architectural Metal Work Manufacturing, Metal Tank (Heavy Gauge) Manufacturing

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Crown and Closure Manufacturing, Metal Stamping, Plate Work Manufacturing, Sheet Metal Work Manufacturing

Plumbing Fixture Fitting and Trim Manufacturing, Other Metal Valve and Pipe Fitting Manufacturing, Ball and Roller Bearing Manufacturing, Small Arms Manufacturing, Fabricated Pipe and Pipe Fitting Manufacturing

Machine Shops, Fabricated Pipe and Pipe Fitting Manufacturing, Ship Building and Repairing

Rolled Steel Shape Manufacturing, Fabricated Pipe and Pipe Fitting Manufacturing, All Other Miscellaneous Fabricated Metal Product Manufacturing, Air Purification Equipment Manufacturing, Industrial and Commercial Fan and Blower Manufacturing

Sheet Metal Work Manufacturing, Fabricated Pipe and Pipe Fitting Manufacturing

Steam and Air-Conditioning Supply, Plastics Pipe and Pipe Fitting Manufacturing, Plastics Plumbing Fixture Manufacturing, Rubber and Plastics Hoses and Belting Manufacturing, Abrasive Product Manufacturing

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Fabricated Structural Metal Manufacturing, Metal Tank (Heavy Gauge) Manufacturing, Machine Shops, Bolt, Nut, Screw, Rivet, and Washer Manufacturing

Fabricated Pipe and Pipe Fitting Manufacturing

All Other Miscellaneous Wood Product Manufacturing, Rubber and Plastics Hoses and Belting Manufacturing, Steel Investment Foundries, Nonferrous Forging, Powder Metallurgy Part Manufacturing

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Rolled Steel Shape Manufacturing, Custom Roll Forming, Metal Stamping, Fabricated Structural Metal Manufacturing

Fabricated Pipe and Pipe Fitting Manufacturing, Heating Equipment (except Warm Air Furnaces) Manufacturing

New Single-Family Housing Construction (except Operative Builders), Industrial Building Construction, Commercial and Institutional Building Construction, Structural Steel and Precast Concrete Contractors, Electrometallurgical Ferroalloy Product Manufacturing

Custom Roll Forming, Fabricated Structural Metal Manufacturing, Plate Work Manufacturing, Sheet Metal Work Manufacturing, Ornamental and Architectural Metal Work Manufacturing

Plumbing, Heating, and Air-Conditioning Contractors, Fabricated Pipe and Pipe Fitting Manufacturing

Machine Shops, Bolt, Nut, Screw, Rivet, and Washer Manufacturing, Other Metal Valve and Pipe Fitting Manufacturing, Fabricated Pipe and Pipe Fitting Manufacturing