Industry: 3321—Gray and Ductile Iron Foundries
Establishments primarily engaged in manufacturing gray and ductile iron castings, including cast iron pressure and soil pipes and fittings.

Brake shoes, railroad: cast ironGray iron foundries
Car wheels, railroad: chilled cast ironIngot molds and stools
Castings, compacted graphite ironManhole covers, metal
Castings, gray iron and semisteelNipples, pipe: pressure and soil pipe-cast iron
Cooking utensils, cast ironNodular iron castings
Couplings, pipe: pressure and soil pipecast ironPipe and fittings, soil and pressure: cast iron
Ductile iron castingsRailroad car wheels, chilled cast iron
Elbows, pipe: pressure and soil pipecast ironRolling mill rolls, iron: not machined
Fittings, soil and pressure pipe: cast ironSash balances, cast iron
Foundries, gray iron and semisteelSewer pipe, cast iron
Gas pipe, cast ironWater pipe, cast iron
Codes Titles Number of US Businesses
3321Gray and Ductile Iron Foundries411
332100Gray and ductile iron foundries122
33210000Gray and ductile iron foundries122
332101Cast iron pipe and fittings70
33210100Cast iron pipe and fittings34
33210101Pressure pipe and fittings, cast iron13
33210102Sewer pipe, cast iron13
33210103Soil pipe and fittings: cast iron3
33210104Water pipe, cast iron7
332199Gray and ductile iron foundries, nec219
33219901Cooking utensils, cast iron7
33219902Ductile iron castings40
33219903Gray iron castings, nec123
33219904Gray iron ingot molds, cast8
33219905Manhole covers, metal27
33219906Railroad car wheels and brake shoes, cast iron9
33219907Rolling mill rolls, cast iron5