> 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/423510/ # NAICS code 423510: Metal Service Centers and Other Metal Merchant Wholesalers The companies classified under NAICS 423510, 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 423510 is the code for Metal Service Centers and Other Metal Merchant Wholesalers, in sector 42: Wholesale Trade. The companies counted under it are mostly very small: 56% have 50 or fewer employees, and 78% are headquartered in the United States. ## What is NAICS 423510? NAICS 423510 is the code for Metal Service Centers and Other Metal Merchant Wholesalers. It belongs to sector 42: Wholesale Trade. 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 5051, Metals service center, in the older SIC system (99%). NAICS is a North American system, so companies outside the US, Canada and Mexico are placed in it by classification. - 56% 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 (78%). Within the US, Texas is the biggest state (19%). - Most were founded in the before 1960 (25%), then the 1990s (19%). **Figure: How NAICS 423510 is built.** The code 423510 split into its parts: sector 42, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 423510. Each digit narrows the category.* ## Which companies are classified under NAICS 423510? The biggest by headcount range include Nexa Resources, Ryerson, Spiecapag, Olympic Steel and Thyssenkrupp Materials Na. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | Nexa Resources | Sao Paulo, Brazil | 5,001 to 10,000 | | Ryerson | Chicago, IL | 1,001 to 5,000 | | Spiecapag | Nanterre, France | 1,001 to 5,000 | | Olympic Steel | Bedford Heights, OH | 1,001 to 5,000 | | Thyssenkrupp Materials Na | Southfield, MI | 1,001 to 5,000 | | Metals Usa | Tulsa, OK | 1,001 to 5,000 | | Mannesmann Stainless Tubes | Mulheim An Der Ruhr, Germany | 1,001 to 5,000 | | Central Steel & Wire | Chicago, IL | 1,001 to 5,000 | | Matrix Metals | Houston, TX | 1,001 to 5,000 | | Ta Chen International | Long Beach, CA | 1,001 to 5,000 | | O'neal Industries | Birmingham, AL | 1,001 to 5,000 | | Texas Pipe & Supply | Houston, TX | 501 to 1,000 | | Majestic Steel Usa | Cleveland, OH | 501 to 1,000 | | O'neal Steel | Birmingham, AL | 501 to 1,000 | | Tw Metals | Exton, PA | 501 to 1,000 | | Eastern Metal Supply | Lake Worth, FL | 501 to 1,000 | | Castle Metals | Oak Brook, IL | 501 to 1,000 | | Al Bassam Group Of Companies | Dammam, Saudi Arabia | 501 to 1,000 | | Infra-Metals | Newtown, PA | 501 to 1,000 | | Farwest Steel | Eugene, OR | 501 to 1,000 | | Coilplus | Rosemont, IL | 501 to 1,000 | | American Steel And Aluminum | Auburn, MA | 501 to 1,000 | | Neo Metaliks | Kolkata, India | 201 to 500 | | Edgen Murray | Houston, TX | 201 to 500 | | Rolled Alloys | Maumee, OH | 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 NAICS 423510 companies based? The largest groups are headquartered in the United States (78%), India (5%) and Canada (4%). **Figure: Where companies in NAICS 423510 are based.** Bars for the share of counted companies in NAICS 423510 headquartered in each country: United States 78%, India 5%, Canada 4%, Germany 3%, United Kingdom 2%, Netherlands 2%, Australia 1%, Italy 1%. *Share of counted companies in NAICS 423510 by headquarters country.* Within the United States, Texas (19%), California (11%) and Illinois (8%) lead. **Figure: US headquarters of companies in NAICS 423510, by state.** A tile map of the United States shaded by the share of counted US companies in NAICS 423510 headquartered in each state. The largest are Texas 19%, California 11%, Illinois 8%. *Share of counted US companies in NAICS 423510 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for NAICS 423510? 56% 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 NAICS 423510.** Seven columns for the share of counted companies in NAICS 423510 in each employee range: 11 to 50 56%, 51 to 200 26%, 201 to 500 10%, 501 to 1,000 4%, 1,001 to 5,000 3%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted companies in NAICS 423510 in each employee range.* ## How old are NAICS 423510 companies? Most were founded in the before 1960 (25%), then the 1990s (19%). **Figure: When companies in NAICS 423510 were founded.** Eight columns for the share of counted companies in NAICS 423510 founded in each era: Before 1960 25%, 1960s 2%, 1970s 10%, 1980s 17%, 1990s 19%, 2000s 19%, 2010s 8%, 2020s 0%. *Share of counted companies in NAICS 423510 by the era they were founded in, for the ones that list a founding year.* ## How NAICS 423510 compares - 9% were founded in 2010 or later, against 30% across all NAICS codes on this site. - Texas holds 19% of the US companies here, against 8% across all NAICS codes on this site. ## How do NAICS 423510 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 (39%), Construction (16%) and Wholesale (9%). **Figure: How companies in NAICS 423510 describe themselves.** Bars for the share of counted companies in NAICS 423510 that give each industry on their public profile: Mining 39%, Construction 16%, Wholesale 9%, Wholesale Building Materials 8%, Wholesale Metals and Minerals 8%, Oil and Gas 7%. *Share of counted companies in NAICS 423510 by the industry they list on their public profile.* ## NAICS 423510 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 5051 | Metals service center | 99% | ## 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 423510 companies? The people to talk to are usually sales, 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 423510 (Metal Service Centers and Other Metal Merchant Wholesalers) ``` ### 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 sales, supply chain and procurement leaders at companies with NAICS code 423510, 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 42: [NAICS 423450: Medical, Dental, and Hospital Equipment](https://enrich.chat/naics/423450/)[NAICS 423430: Computer and Computer Peripheral Equipment](https://enrich.chat/naics/423430/)[NAICS 423610: Electrical Apparatus and Equipment, Wiring](https://enrich.chat/naics/423610/)[NAICS 424690: Other Chemical and Allied Products Merchant](https://enrich.chat/naics/424690/)[NAICS 423810: Construction and Mining Machinery](https://enrich.chat/naics/423810/)[NAICS 423120: Motor Vehicle Supplies and New Parts](https://enrich.chat/naics/423120/)[NAICS 423310: Lumber, Plywood, Millwork, and Wood Panel](https://enrich.chat/naics/423310/)[NAICS 423420: Office Equipment Merchant Wholesalers](https://enrich.chat/naics/423420/) ## Frequently asked questions ### What is NAICS code 423510? NAICS 423510 is the code for Metal Service Centers and Other Metal Merchant Wholesalers, in sector 42: Wholesale Trade. ### What is the SIC code for NAICS 423510 (Metal Service Centers and Other Metal Merchant Wholesalers)? 99% of the companies counted carry SIC 5051 (Metals service center), but the two systems do not map one to one. ### Which companies are classified under NAICS 423510? The biggest by headcount range include Nexa Resources, Ryerson, Spiecapag, Olympic Steel and Thyssenkrupp Materials Na. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 423510 companies based? The largest groups are headquartered in the United States (78%), India (5%) and Canada (4%). ### How big are the companies in NAICS 423510? 56% 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 NAICS 423510 the same as a SIC code? No. NAICS replaced SIC as the U.S. federal standard in 1997, and the two do not map one to one. The SIC code seen most among these companies is 5051. ## Try this prompt Find the people at NAICS 423510 companies ```text Use www.enrich.chat to find the sales, supply chain and procurement leaders at companies with NAICS code 423510, 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/)