> 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/naics/331110/ # NAICS code 331110: Iron and Steel Mills and Ferroalloy Manufacturing The companies classified under NAICS 331110, where they are based, how big they are and how the code maps to SIC. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** NAICS 331110 is the code for Iron and Steel Mills and Ferroalloy Manufacturing, in sector 31-33: Manufacturing. The companies counted under it are mixed in size, with the middle one in the 51 to 200 range, and 36% are headquartered in India. ## What is NAICS 331110? NAICS 331110 is the code for Iron and Steel Mills and Ferroalloy Manufacturing. It belongs to sector 31-33: Manufacturing. NAICS, the North American Industry Classification System, is the standard U.S. government agencies use to sort businesses by what they mainly do, and each digit narrows the category. Most of the companies counted also carry SIC 3312, Blast furnace-steel works, in the older SIC system (72%). NAICS is a North American system, so companies outside the US, Canada and Mexico are placed in it by classification. - 26% of the companies counted have 50 or fewer employees, and the middle one is in the 51 to 200 range. - The largest group is headquartered in India (36%). - Most were founded in the 2010s (22%), then the 1990s (18%). **Figure: How NAICS 331110 is built.** The code 331110 split into its parts: sector 33, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 331110. Each digit narrows the category.* ## Which companies are classified under NAICS 331110? The biggest by headcount range include Jindal Steel & Power, United States Steel, Cleveland-Cliffs, Anwar Ispat and Esl Steel. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | [Jindal Steel & Power](https://enrich.chat/company/jindal-steel-and-power/) | New Delhi, India | 10,001+ | | [United States Steel](https://enrich.chat/company/united-states-steel/) | Pittsburgh, PA | 10,001+ | | Cleveland-Cliffs | Cleveland, OH | 10,001+ | | Anwar Ispat | Dhaka, Bangladesh | 10,001+ | | Esl Steel | Bokaro, India | 5,001 to 10,000 | | Shyam Steel Industries | New Town Kolkata, India | 1,001 to 5,000 | | Apl Apollo Tubes | Noida, India | 1,001 to 5,000 | | Super Smelters | Kolkata, India | 1,001 to 5,000 | | Acciaierie Venete | Padova, Italy | 1,001 to 5,000 | | Rashmi Metaliks | Kolkata, India | 1,001 to 5,000 | | Timkensteel | Canton, OH | 1,001 to 5,000 | | Pt Gunung Raja Paksi Tbk | Bekasi West Java Bekasi West Java, Indonesia | 1,001 to 5,000 | | Upg Enterprises | Oak Brook, IL | 1,001 to 5,000 | | Beekay Steel Industries | Kolkata, India | 1,001 to 5,000 | | Acs Industries | Lincoln, RI | 1,001 to 5,000 | | Voestalpine Böhler Edelstahl GmbH & Co Kg | Kapfenberg, Austria | 1,001 to 5,000 | | Hariom Pipe Industries | Hyderabad, India | 1,001 to 5,000 | | Agha Steel Industries | Karachi, Pakistan | 501 to 1,000 | | Aarti Steels | Cuttack, India | 501 to 1,000 | | Hulas Steel Industries | Kathmandu, Nepal | 501 to 1,000 | | Duferco Travi E Profilati | San Zeno Naviglio, Italy | 501 to 1,000 | | Arora Iron And Steel Rolling Mills | Ludhiana, India | 501 to 1,000 | | Alvance British Aluminium | Fort William Lochaber, United Kingdom | 501 to 1,000 | | Venus Wire Industries | Mumbai, India | 501 to 1,000 | | Suraj | Ahmedabad, India | 501 to 1,000 | 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 NAICS 331110 companies based? The largest groups are headquartered in India (36%), the United States (33%) and the United Kingdom (4%). **Figure: Where companies in NAICS 331110 are based.** Bars for the share of counted companies in NAICS 331110 headquartered in each country: India 36%, United States 33%, United Kingdom 4%, Canada 4%, Germany 4%, Italy 4%, Belgium 3%, United Arab Emirates 2%. *Share of counted companies in NAICS 331110 by headquarters country.* Within the United States, Ohio (20%), Pennsylvania (17%) and Texas (13%) lead. **Figure: US headquarters of companies in NAICS 331110, by state.** A tile map of the United States shaded by the share of counted US companies in NAICS 331110 headquartered in each state. The largest are Ohio 20%, Pennsylvania 17%, Texas 13%. *Share of counted US companies in NAICS 331110 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for NAICS 331110? 26% of them have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in NAICS 331110.** Seven columns for the share of counted companies in NAICS 331110 in each employee range: 11 to 50 26%, 51 to 200 28%, 201 to 500 19%, 501 to 1,000 13%, 1,001 to 5,000 10%, 5,001 to 10,000 2%, 10,001+ 3%. *Share of counted companies in NAICS 331110 in each employee range.* ## How old are NAICS 331110 companies? Most were founded in the 2010s (22%), then the 1990s (18%). **Figure: When companies in NAICS 331110 were founded.** Eight columns for the share of counted companies in NAICS 331110 founded in each era: Before 1960 16%, 1960s 5%, 1970s 14%, 1980s 13%, 1990s 18%, 2000s 11%, 2010s 22%, 2020s 2%. *Share of counted companies in NAICS 331110 by the era they were founded in, for the ones that list a founding year.* ## How NAICS 331110 compares - 26% of companies in NAICS 331110 have 50 or fewer employees, against 60% across all NAICS codes on this site. - Ohio holds 20% of the US companies here, against 3% across all NAICS codes on this site. ## How do NAICS 331110 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 Mining (35%), Manufacturing (19%) and Industrial Machinery Manufacturing (11%). **Figure: How companies in NAICS 331110 describe themselves.** Bars for the share of counted companies in NAICS 331110 that give each industry on their public profile: Mining 35%, Manufacturing 19%, Industrial Machinery Manufacturing 11%, Wholesale Building Materials 11%, Construction 6%, Machinery Manufacturing 6%. *Share of counted companies in NAICS 331110 by the industry they list on their public profile.* ## NAICS 331110 and the SIC system NAICS replaced SIC in 1997, but the two do not line up one to one: companies filed under one NAICS code can carry several SIC codes. These are the ones seen most. | Code | Title | Share of counted | | --- | --- | --- | | SIC 3312 | Blast furnace-steel works | 72% | | SIC 3317 | Manufacturing steel pipe and tubes | 6% | | SIC 3313 | Manufacturing electrometallurgical prdts-ex steel | 5% | | SIC 5051 | Metals service center | 5% | ## Where NAICS codes come from NAICS is maintained by the U.S. Census Bureau with Canada and Mexico and revised every five years; the current edition is NAICS 2022. To check exactly what a code includes, search the [official NAICS index](https://www.census.gov/naics/) or read the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html). Pick a code by what a company mostly does, not by who it sells to. ## How do you reach the people at NAICS 331110 companies? The people to talk to are usually operations, supply chain and procurement leaders. You can build the list from this code 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 NAICS code 331110 (Iron and Steel Mills and Ferroalloy Manufacturing) ``` ### 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 NAICS code 331110, 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 ``` ## More to explore Others in sector 31-33: [NAICS 325412: Pharmaceutical Preparation Manufacturing](https://enrich.chat/naics/325412/)[NAICS 326199: All Other Plastics Product Manufacturing](https://enrich.chat/naics/326199/)[NAICS 339112: Surgical and Medical Instrument](https://enrich.chat/naics/339112/)[NAICS 336390: Other Motor Vehicle Parts Manufacturing](https://enrich.chat/naics/336390/)[NAICS 332710: Machine Shops](https://enrich.chat/naics/332710/)[NAICS 312130: Wineries](https://enrich.chat/naics/312130/)[NAICS 333111: Farm Machinery and Equipment Manufacturing](https://enrich.chat/naics/333111/)[NAICS 334413: Semiconductor and Related Device](https://enrich.chat/naics/334413/) ## Frequently asked questions ### What is NAICS code 331110? NAICS 331110 is the code for Iron and Steel Mills and Ferroalloy Manufacturing, in sector 31-33: Manufacturing. ### What is the SIC code for NAICS 331110 (Iron and Steel Mills and Ferroalloy Manufacturing)? 72% of the companies counted carry SIC 3312 (Blast furnace-steel works), but the two systems do not map one to one. ### Which companies are classified under NAICS 331110? The biggest by headcount range include Jindal Steel & Power, United States Steel, Cleveland-Cliffs, Anwar Ispat and Esl Steel. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 331110 companies based? The largest groups are headquartered in India (36%), the United States (33%) and the United Kingdom (4%). ### How big are the companies in NAICS 331110? 26% have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. ### How do I find a company's NAICS code? Search the official NAICS index at the U.S. Census Bureau for the code that matches what the company mostly does. Public companies in the US also list a SIC code in their SEC EDGAR profile. ## Try this prompt Find the people at NAICS 331110 companies ```text Use www.enrich.chat to find the operations, supply chain and procurement leaders at companies with NAICS code 331110, 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/)