Plastics Pipe and Pipe Fitting Manufacturing, Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Iron Foundries, Industrial Valve Manufacturing, Fluid Power Valve and Hose Fitting Manufacturing

Iron Foundries, Steel Foundries (except Investment), Aluminum Foundries (except Die-Casting)

Iron Foundries, Steel Investment Foundries, Steel Foundries (except Investment), Aluminum Die-Casting Foundries, Nonferrous (except Aluminum) Die-Casting Foundries

Power and Communication Line and Related Structures Construction, Plumbing, Heating, and Air-Conditioning Contractors, Plastics Plumbing Fixture Manufacturing, Iron Foundries, Plumbing Fixture Fitting and Trim Manufacturing

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel, Iron Foundries, Fabricated Pipe and Pipe Fitting Manufacturing, Metal Service Centers and Other Metal Merchant Wholesalers, Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers

Iron Foundries, Steel Foundries (except Investment), Aluminum Die-Casting Foundries, Aluminum Foundries (except Die-Casting), Copper Foundries (except Die-Casting)

All Other Plastics Product Manufacturing, Steel Wire Drawing, Iron Foundries, Steel Foundries (except Investment), Iron and Steel Forging

Water and Sewer Line and Related Structures Construction, Power and Communication Line and Related Structures Construction, Plastics Pipe and Pipe Fitting Manufacturing, Iron and Steel Mills, Copper Rolling, Drawing, and Extruding

Iron Foundries, Steel Investment Foundries, Iron and Steel Forging

Iron Foundries