SIC 3449 to NAICS Code Crosswalk
The legacy 1987 SIC code 3449 (Miscellaneous Structural Metal Work) maps transitively to modern U.S. Census 2022 NAICS code(s): 332114, 332312, 332321, 332323.
Concordance Concordance Mapping Asset
| Source Code | Source Industry | Target Code | Target Industry | Relation | Concordance Path |
|---|---|---|---|---|---|
| SIC 3449 | Miscellaneous Structural Metal Work | NAICS 332114 | Custom Roll Forming | One-to-Many | SIC1987:3449 → NAICS1997:332114 → 2002:332114 → 2007:332114 → 2012:332114 → 2017:332114 → 2022:332114 |
| SIC 3449 | Miscellaneous Structural Metal Work | NAICS 332312 | Fabricated Structural Metal Manufacturing | One-to-Many | SIC1987:3449 → NAICS1997:332312 → 2002:332312 → 2007:332312 → 2012:332312 → 2017:332312 → 2022:332312 |
| SIC 3449 | Miscellaneous Structural Metal Work | NAICS 332321 | Metal Window and Door Manufacturing | One-to-Many | SIC1987:3449 → NAICS1997:332321 → 2002:332321 → 2007:332321 → 2012:332321 → 2017:332321 → 2022:332321 |
| SIC 3449 | Miscellaneous Structural Metal Work | NAICS 332323 | Ornamental and Architectural Metal Work Manufacturing | One-to-Many | SIC1987:3449 → NAICS1997:332323 → 2002:332323 → 2007:332323 → 2012:332323 → 2017:332323 → 2022:332323 |
Why Concordances Don't Line Up 1:1
The Standard Industrial Classification (SIC) system was established in 1937 and last updated in 1987, organizing businesses by end products. The North American Industry Classification System (NAICS) replaced it in 1997, classifying establishments by production processes. Because of this structural shift, many-to-many relationships are common, requiring chained concordance steps to bridge the historical gap.
Reverse Crosswalk: Going the other way? See the mapping at NAICS 332114 to SIC, NAICS 332312 to SIC, NAICS 332321 to SIC, NAICS 332323 to SIC.
Related Pages & Tools
- SIC Code 3449 Profile — Legacy OSHA definition and associated industrial metadata.
- SIC Major Group 34 Hub — Legacy category group directory.
- Interactive Crosswalk Engine — Convert any SIC or NAICS code dynamically.
Primary Ingestion Source
Data sourced from the U.S. Census Bureau Concordances (1997, 2002, 2007, 2012, 2017, and 2022 editions). Last verified on 2026-06-30.