SIC Code 3321: Gray and Ductile Iron Foundries
The SIC code for Gray and Ductile Iron Foundries is 3321.
Gray and Ductile Iron Foundries establishments operate within the SIC 3321 classification, providing products and services as defined by the Standard Industrial Classification system.
Gray and Ductile Iron Foundries (SIC 3321) is part of SIC 332 — Iron and Steel Foundries, which contains 4 industries.
3321
SIC Code
33151
NAICS Equivalent
NAICS Equivalent
Corresponding NAICS Code
NAICS 33151 — Ferrous Metal Foundries
NAICS 2022 · Sector 31-33: Manufacturing
NAICS replaced SIC for US federal statistics in 1997. Browse all NAICS codes
SIC 1987
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Other Industries in Iron and Steel Foundries
Need the NAICS equivalent? convert a SIC code to NAICS using the mapping table — SIC 1987 four-digit industries paired with NAICS 2022 at the five-digit industry level, with coverage gaps stated.