2017 Edition

national industry 331511

Iron Foundries


This U.S. industry comprises establishments primarily engaged in pouring molten pig iron or iron alloys into molds to manufacture castings (e.g., cast iron manhole covers, cast iron pipe, cast iron skillets). Establishments in this industry purchase iron made in other establishments.

The immediate parent of national industry 331511 is international industry 33151: Ferrous Metal Foundries

2017 NAICS Edition Cross References

  • Establishments primarily engaged in manufacturing iron castings and further manufacturing them into finished products are classified based on the specific finished product.


The NAICS editions in which this code was present are indicated below. In the event that a code was changed from the prior edition the equivalent value in that edition is provided for reference.

Edition Value
2002 331511 -
2007 331511 -
2012 331511 -
2017 331511 -

Standard Industrial Classification (SIC) Mappings

  1. 3321 - Gray and Ductile Iron Foundries
  2. 3322 - Malleable Iron Foundries

Insurance Industry Mappings

The US Property and Casualty Insurance Industry may use the following classification descriptions which might encompass national industry 331511, Iron Foundries:

  1. cooking utensil manufacturing steel
  2. cooking utensil manufacturing steel or aluminum
  3. die casting manufacturing
  4. die casting manufacturing spec of other prod not critical part of aircraft or military related equipment
  5. ferrous metal foundry
  6. foundry
  7. foundry ferrous malleable iron
  8. foundry ferrous not otherwise classified
  9. foundry ferrous not otherwise classified gray and ductile iron
  10. foundry not otherwise classified
  11. foundry or metal work primary ferrous
  12. gray and ductile iron foundry
  13. iron foundry
  14. malleable iron foundry
  15. manufacturing
  16. metal work or foundry primary ferrous
  17. pipe or tube manufacturing
  18. primary metal manufacturing
  19. wheel manufacturing


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