> 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/327390/ # NAICS code 327390: Other Concrete Product Manufacturing The companies classified under NAICS 327390, 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 327390 is the code for Other Concrete Product Manufacturing, in sector 31-33: Manufacturing. The companies counted under it are mostly small: 75% have 200 or fewer employees, and 60% are headquartered in the United States. ## What is NAICS 327390? NAICS 327390 is the code for Other Concrete Product 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 3272, Manufacturing concrete products, in the older SIC system (73%). NAICS is a North American system, so companies outside the US, Canada and Mexico are placed in it by classification. - 39% 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 the United States (60%). Within the US, Illinois is the biggest state (6%). - Most were founded in the before 1960 (31%), then the 2000s (18%). **Figure: How NAICS 327390 is built.** The code 327390 split into its parts: sector 32, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 327390. Each digit narrows the category.* ## Which companies are classified under NAICS 327390? The biggest by headcount range include Quikrete, Maga Engineering Private, Quanex, Oldcastle Infrastructure and Aggregate Industries Uk. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | Quikrete | Atlanta, GA | 5,001 to 10,000 | | Quanex | Houston, TX | 5,001 to 10,000 | | Oldcastle Infrastructure | Atlanta, GA | 1,001 to 5,000 | | Aggregate Industries Uk | Markfield, United Kingdom | 1,001 to 5,000 | | Tindall | Spartanburg, SC | 1,001 to 5,000 | | Fabcon | Eden Prairie, MN | 1,001 to 5,000 | | Pt Adhimix Precast Indonesia | Jakarta Selatan, Indonesia | 1,001 to 5,000 | | County Materials | Marathon, WI | 1,001 to 5,000 | | Pt Rajawali Hiyoto | West Java, Indonesia | 1,001 to 5,000 | | Coreslab Structures | Stoney Creek, Canada | 1,001 to 5,000 | | Saint-Gobain Weber France | Sucy-En-Brie, France | 501 to 1,000 | | Aparna Enterprises | Hyderabad, India | 501 to 1,000 | | Clark Pacific | West Sacramento, CA | 501 to 1,000 | | Stradal | Cergy-Pontoise, France | 501 to 1,000 | | Unilock | Toronto, Canada | 501 to 1,000 | | Bradley | Menomonee Falls, WI | 501 to 1,000 | | Hynds Pipe Systems | Auckland, New Zealand | 501 to 1,000 | | Pavit Ceramics | Ahmedabad, India | 501 to 1,000 | | Rudus | Helsinki, Finland | 501 to 1,000 | | High Concrete Group | Denver, PA | 501 to 1,000 | | Eagle Roofing Products | Rialto, CA | 501 to 1,000 | | Decast | Utopia, Canada | 501 to 1,000 | | Ajax Paving Industries | Troy, MI | 501 to 1,000 | | Somaco Grup Prefabricate | Bucharest Bucharest, Romania | 501 to 1,000 | | Firstchoice Ready Mix | Hyderabad Telangana, 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 327390 companies based? The largest groups are headquartered in the United States (60%), the United Kingdom (5%) and Canada (5%). **Figure: Where companies in NAICS 327390 are based.** Bars for the share of counted companies in NAICS 327390 headquartered in each country: United States 60%, United Kingdom 5%, Canada 5%, France 4%, India 4%, Italy 4%, Germany 3%, Australia 2%. *Share of counted companies in NAICS 327390 by headquarters country.* Within the United States, Illinois (6%), Pennsylvania (6%) and California (5%) lead. **Figure: US headquarters of companies in NAICS 327390, by state.** A tile map of the United States shaded by the share of counted US companies in NAICS 327390 headquartered in each state. The largest are Illinois 6%, Pennsylvania 6%, California 5%. *Share of counted US companies in NAICS 327390 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for NAICS 327390? 39% 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 327390.** Seven columns for the share of counted companies in NAICS 327390 in each employee range: 11 to 50 39%, 51 to 200 35%, 201 to 500 13%, 501 to 1,000 8%, 1,001 to 5,000 4%, 5,001 to 10,000 1%, 10,001+ 0%. *Share of counted companies in NAICS 327390 in each employee range.* ## How old are NAICS 327390 companies? Most were founded in the before 1960 (31%), then the 2000s (18%). **Figure: When companies in NAICS 327390 were founded.** Eight columns for the share of counted companies in NAICS 327390 founded in each era: Before 1960 31%, 1960s 10%, 1970s 10%, 1980s 9%, 1990s 12%, 2000s 18%, 2010s 9%, 2020s 0%. *Share of counted companies in NAICS 327390 by the era they were founded in, for the ones that list a founding year.* ## How NAICS 327390 compares - 39% of companies in NAICS 327390 have 50 or fewer employees, against 60% across all NAICS codes on this site. - 9% were founded in 2010 or later, against 30% across all NAICS codes on this site. ## How do NAICS 327390 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 (58%), Wholesale Building Materials (25%) and Building Materials (6%). **Figure: How companies in NAICS 327390 describe themselves.** Bars for the share of counted companies in NAICS 327390 that give each industry on their public profile: Construction 58%, Wholesale Building Materials 25%, Building Materials 6%, Glass; Ceramics and Concrete Manufacturing 6%. *Share of counted companies in NAICS 327390 by the industry they list on their public profile.* ## NAICS 327390 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 3272 | Manufacturing concrete products | 73% | | [SIC 3273](https://enrich.chat/naics/327320/) | Manufacturing ready-mixed concrete | 4% | | SIC 3271 | Manufacturing concrete block and brick | 3% | | SIC 5032 | Wholesale brick and stone material | 3% | ## 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 327390 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 327390 (Other Concrete Product 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 327390, 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 Codes next to it: [NAICS 327320: Ready-Mix Concrete Manufacturing](https://enrich.chat/naics/327320/) 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 327390? NAICS 327390 is the code for Other Concrete Product Manufacturing, in sector 31-33: Manufacturing. ### What is the SIC code for NAICS 327390 (Other Concrete Product Manufacturing)? 73% of the companies counted carry SIC 3272 (Manufacturing concrete products), but the two systems do not map one to one. ### Which companies are classified under NAICS 327390? The biggest by headcount range include Quikrete, Maga Engineering Private, Quanex, Oldcastle Infrastructure and Aggregate Industries Uk. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 327390 companies based? The largest groups are headquartered in the United States (60%), the United Kingdom (5%) and Canada (5%). ### How big are the companies in NAICS 327390? 39% 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 327390 companies ```text Use www.enrich.chat to find the operations, supply chain and procurement leaders at companies with NAICS code 327390, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 327320](https://enrich.chat/naics/327320/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)