> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/sic/3441/ # SIC code 3441: Structural metal fabrication The companies classified under SIC 3441, where they are based, how big they are and how the code maps to NAICS. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** SIC 3441 is the Standard Industrial Classification code for Structural metal fabrication, in division D (Manufacturing). The companies counted under it are mostly very small: 54% have 50 or fewer employees. ## What is SIC 3441? SIC 3441 is the Standard Industrial Classification code for Structural metal fabrication. It sits in division D, Manufacturing. The first two digits name the major group, and the last two narrow it to a single industry. Most of the companies counted also carry NAICS 332312 (84%). - 54% of the companies counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. - The largest group is headquartered in the United States (56%). Within the US, Texas is the biggest state (9%). - Most were founded in the 1990s (20%), then the 1970s (15%). **Figure: How SIC 3441 is built.** The code 3441 split into its parts: major group 34, then industry group and industry. It sits in division D, Manufacturing. *The four digits of SIC 3441.* ## Which companies are classified under SIC 3441? The biggest by headcount range include Arconic, Peri, Monadelphous, Infrabuild and The Haskell. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | [Arconic](https://enrich.chat/company/arconic/) | Pittsburgh, PA | 10,001+ | | Monadelphous | Perth, Australia | 5,001 to 10,000 | | Infrabuild | Sydney, Australia | 5,001 to 10,000 | | The Haskell | Jacksonville, FL | 1,001 to 5,000 | | Nucor Building Systems | Waterloo, IN | 1,001 to 5,000 | | Matcor Metal Fabrication | Mississauga, Canada | 1,001 to 5,000 | | Atad Steel Structure | Ho Chi Minh, Vietnam | 1,001 to 5,000 | | Dynamic Industries | New Orleans, LA | 1,001 to 5,000 | | W&w Afco Steel | Oklahoma City, OK | 1,001 to 5,000 | | Canerector | Toronto, Canada | 1,001 to 5,000 | | Dbm Global | Phoenix, AZ | 1,001 to 5,000 | | United Alloy | Janesville, WI | 1,001 to 5,000 | | The Herrick | Stockton, CA | 1,001 to 5,000 | | High Steel Structures | Lancaster, PA | 501 to 1,000 | | Trimo | Trebnje, Slovenia | 501 to 1,000 | | Supreme Steel | Acheson, Canada | 501 to 1,000 | | Glass Wall Systems | Mumbai, India | 501 to 1,000 | | Spitzer Industries | Houston, TX | 501 to 1,000 | | Steele Solutions | South Milwaukee, WI | 501 to 1,000 | | Hme | Topeka, KS | 501 to 1,000 | | Steffes | Dickinson, ND | 501 to 1,000 | | Morton Industries | Morton, IL | 501 to 1,000 | | Jindal Buildsys | Gurgaon, India | 501 to 1,000 | | Volkmann & Rossbach | Montabaur, Germany | 501 to 1,000 | | Zamil Steel Buildings India Private | Pune, India | 201 to 500 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## Where are SIC 3441 companies based? The largest groups are headquartered in the United States (56%), Italy (11%) and Germany (7%). **Figure: Where companies in SIC 3441 are based.** Bars for the share of counted companies in SIC 3441 headquartered in each country: United States 56%, Italy 11%, Germany 7%, United Kingdom 7%, Canada 4%, France 3%, Australia 2%, Netherlands 2%. *Share of counted companies in SIC 3441 by headquarters country.* Within the United States, Texas (9%), Wisconsin (8%) and Ohio (7%) lead. **Figure: US headquarters of companies in SIC 3441, by state.** A tile map of the United States shaded by the share of counted US companies in SIC 3441 headquartered in each state. The largest are Texas 9%, Wisconsin 8%, Ohio 7%. *Share of counted US companies in SIC 3441 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for SIC 3441? 54% of them have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in SIC 3441.** Seven columns for the share of counted companies in SIC 3441 in each employee range: 11 to 50 54%, 51 to 200 35%, 201 to 500 7%, 501 to 1,000 2%, 1,001 to 5,000 1%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted companies in SIC 3441 in each employee range.* ## How old are SIC 3441 companies? Most were founded in the 1990s (20%), then the 1970s (15%). **Figure: When companies in SIC 3441 were founded.** Eight columns for the share of counted companies in SIC 3441 founded in each era: Before 1960 12%, 1960s 9%, 1970s 15%, 1980s 14%, 1990s 20%, 2000s 15%, 2010s 14%, 2020s 1%. *Share of counted companies in SIC 3441 by the era they were founded in, for the ones that list a founding year.* ## How SIC 3441 compares - 15% were founded in 2010 or later, against 30% across all NAICS codes on this site. - Wisconsin holds 8% of the US companies here, against 2% across all NAICS codes on this site. ## SIC 3441 and the NAICS system NAICS replaced SIC as the U.S. federal standard in 1997, but the two do not line up one to one. These are the NAICS codes seen most among the companies counted under SIC 3441. | Code | Title | Share of counted | | --- | --- | --- | | NAICS 332312 | Fabricated Structural Metal Manufacturing | 84% | ## How do SIC 3441 companies describe themselves? A code is assigned by classification, and a company does not choose its own, so the label a company uses for itself can differ. The most common labels here are Construction (45%), Industrial Machinery Manufacturing (14%) and Machinery Manufacturing (9%). **Figure: How companies in SIC 3441 describe themselves.** Bars for the share of counted companies in SIC 3441 that give each industry on their public profile: Construction 45%, Industrial Machinery Manufacturing 14%, Machinery Manufacturing 9%, Mining 8%, Manufacturing 6%, Fabricated Metal Products 5%. *Share of counted companies in SIC 3441 by the industry they list on their public profile.* ## Where SIC codes come from SIC was created in the 1930s and is now historical: the U.S. government replaced it with NAICS in 1997. It is still widely used, and the SEC still assigns a SIC code to every company that files on EDGAR. The full list is in the [SIC manual](https://www.osha.gov/data/sic-manual) that OSHA hosts, and the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html) explains how the two relate. ## How do you reach the people at SIC 3441 companies? The people to talk to are usually operations, supply chain and procurement leaders. You can build the list in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the companies with SIC code 3441 (Structural metal fabrication) ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the operations, supply chain and procurement leaders at companies with SIC code 3441, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## Frequently asked questions ### What is SIC code 3441? SIC 3441 is the code for Structural metal fabrication, in division D (Manufacturing). ### What is the NAICS code for SIC 3441 (Structural metal fabrication)? 84% of the companies counted carry NAICS 332312 (Fabricated Structural Metal Manufacturing), but the two systems do not map one to one. ### Which companies are classified under SIC 3441? The biggest by headcount range include Arconic, Peri, Monadelphous, Infrabuild and The Haskell. The page lists 25 with links to their profiles where we have them. ### How big are the companies in SIC 3441? 54% have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. ### Is SIC still used? Yes. The U.S. government replaced SIC with NAICS in 1997, but SIC codes are still common in business databases, and the SEC still uses them on EDGAR. ## Try this prompt Find the people at SIC 3441 companies ```text Use www.enrich.chat to find the operations, supply chain and procurement leaders at companies with SIC code 3441, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)