Other Concrete Product Manufacturing (U.S.) — Industry Rollup Primer

NAICS 2022 code 32739. NAICS = North American Industry Classification System, the federal standard for grouping businesses by activity. This is a NAICS industry (the 5-digit level), one rung above the individual 6-digit industries beneath it.

1. Overview

This level covers the business of making concrete parts in a factory and shipping them to a job site ready to install — precast bridge girders and beams, architectural wall panels, highway sound barriers and safety barriers, utility vaults, burial vaults, septic tanks, cast-stone trim, and similar goods. It is the "everything else" corner of concrete-product manufacturing: concrete goods that are not cement, ready-mix, block, brick, or pipe (each of which sits in its own separate code). For an investor it is a direct, physical read on the U.S. construction cycle — highways and bridges, water and power infrastructure, warehouses, parking decks, and, lately, data centers. [1]

2. What's inside — and why this level equals its one child

A 5-digit NAICS industry can contain several 6-digit national industries. This one contains exactly one: 327390 (also named Other Concrete Product Manufacturing). Because there is a single child and nothing else, NAICS 32739 and NAICS 327390 describe the same set of companies, plants, and dollars — the 5-digit code is just the U.S. detail collapsed up one level. Everything true of the child is true here.

So this page is deliberately short. It gives this level's own federal totals and the shape of the industry, then points you to the child primer (327390) for the full treatment — the three product families (structural/prestressed, architectural, and commodity/utility precast), the manufacturing process, the company-by-company investable universe, plant economics, demand drivers, regulation, and risks. One boundary is worth carrying up: the code excludes cement (327310), ready-mix (327320), block and brick (327331), pipe (327332), and the on-site erection trade (238120), which is why commercial "precast concrete" market reports — which bundle several of those codes — describe a materially larger market than this one. [1]

3. Size (this level's federal figures)

The following are the ingested federal statistics for NAICS 32739. Because this level equals its one child, these are identical to the 327390 figures.

Concentration — fragmented, and durably so. The four largest firms hold just 16.3% of receipts (the CR4, or four-firm concentration ratio); the top eight 26.2%, the top 20 40.3%, and even the top 50 only 54.4%. The Herfindahl-Hirschman Index (HHI — the sum of each firm's squared market share; U.S. antitrust agencies treat anything under 1,500 as "unconcentrated") is 125.9, near the bottom of the scale. No one controls this industry nationally, and roughly half of it is made by firms outside the top 50. This is not a recent condition: the 2002 Economic Census reported a CR4 of 15.4% and an HHI of 96.9, so two decades of roll-up activity have moved concentration only slightly. [2][3]

The federal small-business size standard here is 500 employees — a plant with up to 500 workers still counts as "small" for federal purposes, which tells you how modest a typical operator is. [4]

Undercount caveat. The federal figure captures manufacturing plants in this code only. Two things sit outside it: (a) the on-site erection and installation labor, which lands in construction code 238120; and (b) sibling concrete products — pipe, block, ready-mix — in their own codes. That is why private market-research "U.S. precast concrete market" estimates run larger (on the order of $20–21 billion for 2024, growing roughly 6% a year): they define "precast" across several NAICS codes and sometimes include installed value. Read the $18.1 billion Census number as the clean measure of factory output for this code. Note too that the small independents that dominate the tail — family-owned vault, septic-tank, and barrier shops — are numerous and lightly measured, so activity at the very bottom of the size distribution is easy to understate. [5][6]

4. Investable universe (where the value sits)

With a single child, value concentrates exactly as it does one level down. Public options are thin and the real ownership is private:

• The one pure play: Smith-Midland (NASDAQ: SMID), a micro-cap that did $93.4 million of revenue and $12.5 million of net income in FY2025 — real infrastructure exposure, but thinly traded, and it disclosed material internal-control weaknesses for FY2025. [8]

• Partial and mixed exposures: L.B. Foster (NASDAQ: FSTR), which owns CXT and other precast operations inside a rail-and-infrastructure business (precast sales grew 19.9% in 2025), and NWPX Infrastructure (NASDAQ: NWPX), whose $175.1 million precast segment includes Census-excluded pipe and is therefore not a clean read on this code. [10][11]

• Diversified building-materials groups where precast is a small slice: Amrize (NYSE: AMRZ), CRH plc (NYSE: CRH, owner of Oldcastle Infrastructure at roughly $1.1 billion of revenue), Commercial Metals (NYSE: CMC), which became a major precast-and-pipe owner through two 2025 acquisitions, and CEMEX (NYSE: CX). [12][13][14][15]

• Private: the bulk of the industry — Quikrete/Forterra (though Forterra added mostly water and drainage pipe, a different code), The Wells Companies (being acquired by private-equity firm KPS Capital Partners), Metromont, Tindall (now inside Amrize's North American footprint), Coreslab, Jensen Precast, Fabcon, Shockey Precast, County Materials, and hundreds of small local plants — the National Precast Concrete Association alone counts more than 600 producer members worldwide. [16][17][18]

Tickers, segment figures, and the full ownership map are in the 327390 primer. [8][12][13][17]

5. How the money works

Owners turn bulk commodities (cement, aggregates, water, admixtures, reinforcing steel) into engineered shapes sold at a value-added markup, then defend margin through plant utilization and geography. The defining feature is freight: the product is heavy and cheap per pound, so most commodity precast travels economically less than about 150 miles, while proprietary, higher-value products can support a radius closer to 450 miles. That fences each plant into a local market — turning a well-placed plant into a regional near-monopoly, but capping how much any one plant can serve. Profitability rises and falls with how full the plant runs; utilization in the 80–90% range is the healthy zone, and well-run precast reports roughly 20–28% gross margins depending on product mix. Smith-Midland posted an 18.2% operating and 13.4% net margin in FY2025, but its mix includes high-margin rentals, royalties, and installation, so it is not a clean manufacturing benchmark; NWPX's precast segment (which includes pipe) reported a 20.8% gross margin. Pricing has kept rising — the producer price index for this code went from 261.4 in May 2025 to 276.4 in May 2026, about 5.7% year over year. Backlog is the forward-visibility metric: Smith-Midland reported $53.1 million on March 3, 2026, down from $59.5 million a year earlier. See 327390 for the full economics (revenue mix, rental and licensing income, cost pass-through, and the plant-level diligence checklist). [8][9][10][19]

6. Demand drivers

Demand is construction demand, weighted toward non-residential and infrastructure: highways and bridges, water/wastewater and power, and — the standout growth market — data centers, where construction spending rose roughly 35% to about $42 billion in 2025 and drove some 42% of national non-residential building growth, using enormous volumes of concrete increasingly fabricated off-site. The 2021 Infrastructure Investment and Jobs Act (IIJA) put ~$1.2 trillion in play, roughly $500 billion of it for roads, bridges, and major projects, of which only about 40% had been spent as of late 2025; state Department of Transportation (DOT) budgets have climbed from ~$191 billion (2019) to an estimated ~$268 billion (2025). The law also directs more than $50 billion to EPA for drinking- water, wastewater, and stormwater work, and the Bridge Formula Program appropriated $5.5 billion a year for fiscal 2022–2026. Behind that sits a much larger backlog of need — EPA puts drinking-water needs at $625 billion over twenty years and clean-water needs at $630.1 billion (needs, not booked demand). Manufacturing reshoring adds work, and tight construction labor keeps pushing builders toward faster off-site precast methods. Residential end-use is smaller and more rate-sensitive. Full detail is in 327390. [7][20][21][22][23][24]

7. Regulation

Precast is lightly regulated as a product but touches several regimes: worker safety (the Occupational Safety and Health Administration's respirable crystalline silica rule is the main burden — a 25 microgram-per-cubic-metre action level and a 50 microgram permissible exposure limit over eight hours); routine environmental compliance for industrial stormwater, wash water, and dust, where EPA groups concrete plants under its Sector E guidance; product-quality and state DOT certification, where plant certification from the National Precast Concrete Association (NPCA) or the Precast/Prestressed Concrete Institute (PCI) is effectively a license to bid public and structural work; Build America, Buy America domestic-content rules (a tailwind, since freight already makes imports uneconomic, though the Federal Highway Administration ended its general manufactured-products waiver on March 20, 2025, and domestic components must exceed 55% of component cost where the rules apply); and rising embodied-carbon disclosure, with EPA holding $250 million to improve Environmental Product Declaration reporting and $100 million for a low-carbon construction-material label. Same as the child — see 327390. [25][26][27][28][29]

8. Consolidation

A two-tier, freight-protected, consolidating market: no firm dominates nationally (CR4 16.3%, HHI 125.9), yet within a given metro a handful of plants can control the market because rivals can't ship in economically. Stable cash flows behind freight moats plus many aging, family-owned plants have drawn heavy private-equity and strategic roll-up activity — Quikrete's ~$2.3 billion take-private of Forterra (2022, though weighted to pipe), Commercial Metals' $675 million purchase of Concrete Pipe & Precast and $1.84 billion purchase of Foley Products (both 2025, at 9.5× and 10.3× estimated EBITDA respectively, and both including pipe), Wells's acquisition of Gate Precast (2024) and its own sale to KPS (2026), and Holcim's earlier purchase of Tindall (2017). Those multiples are the best public reference points for what a plant portfolio trades at. Detail in 327390. [2][6][14][15][16][17]

9. Risks

Construction cyclicality (revenue tracks non-residential and infrastructure building); input-cost and margin lag (cement and reinforcing-steel spikes, plus tariffs on steel, strand, and equipment, compress margins until pass-through catches up — and much work is bid months before it is produced); freight, fuel, and permitting exposure on oversized loads; project concentration for small precasters; substitution by cast-in-place concrete, structural steel, tilt-up, and mass timber in structures, and by plastic, polymer concrete, corrugated steel, fiberglass, and ductile iron in utility and drainage work; quality-failure liability on structural and safety-critical products; and labor, silica, and carbon-compliance costs. For public investors specifically, the near-total absence of pure-play listings means the one focused U.S. name is a thinly traded micro-cap that has also disclosed material internal-control weaknesses. Fuller discussion in 327390. [5][6][8][9][24][25][26]

10. How to invest & outlook

Because this level is its one child, the routes in are identical. Public: a single micro-cap pure play (Smith-Midland); partial exposures in L.B. Foster and NWPX Infrastructure (the latter mixing in pipe); or diversified building-materials proxies (Amrize, CRH, Commercial Metals, CEMEX) that give you the construction cycle broadly, with precast as one line. Private is where the industry actually lives — owning a local plant (many are family-owned and facing succession), backing the private-equity roll-ups, or owning suppliers around the plants; the value is in a plant's location and haul radius, its certifications, its form inventory, and its backlog. The demand backdrop looks favorable into the second half of the decade — unspent IIJA money, hundreds of billions in EPA- identified water needs, the data-center buildout, reshoring, and the labor-driven shift to off-site construction — against interest-rate-sensitive commercial building, cement and steel input costs, tariff exposure, and carbon-compliance pressure. The practical takeaway is structural: the opportunity is far larger on the private side than the thin public menu suggests. For the company-level detail, ticker-by-ticker specifics, and full outlook, read the 327390 primer. [5][6][8][20][22][23]

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Sources

1. U.S. Census Bureau, "NAICS 2022 — 327390 Other Concrete Product Manufacturing (definition and examples)," 2022. https://www.census.gov/naics/?input=327390; NAICS.com industry description, https://www.naics.com/naics-code-description/?code=327390

2. U.S. Census Bureau, County Business Patterns (2023) and 2022 Economic Census — Comparative Statistics / Concentration (receipts, firms, establishments, employment, payroll, CR4/CR8/CR20/CR50, HHI), via Histometrics ingested federal statistics. https://www.census.gov/programs-surveys/cbp.html

3. U.S. Census Bureau, 2002 Economic Census, Concentration Ratios: 2002 (historical CR4 15.4%, HHI 96.9). https://www2.census.gov/library/publications/economic-census/2002/manufacturing-reports/subject-series/ec0231sr1.pdf

4. U.S. Small Business Administration, "Table of Size Standards" (NAICS 327390 = 500 employees), 2023. https://www.sba.gov/document/support-table-size-standards

5. Grand View Research, "U.S. Precast Concrete Market Size, Industry Report, 2030," 2024. https://www.grandviewresearch.com/industry-analysis/us-precast-concrete-market-report

6. IBISWorld, "Precast Concrete Manufacturing in the US — Industry Report," 2026. https://www.ibisworld.com/united-states/industry/precast-concrete-manufacturing/556/

7. National Precast Concrete Association, "2026 Construction Outlook for the Precast Concrete Industry" (IIJA spend-down, state DOT budgets, data centers), 2026. https://precast.org/blog/2026-construction-outlook-for-the-precast-concrete-industry/

8. Smith-Midland Corporation, FY2025 Form 10-K (SEC), 2026. https://www.sec.gov/Archives/edgar/data/924719/000165495426003505/smid_10k.htm

9. OpenPR / market-research summary, "Precast Concrete Manufacturing Plant Cost 2026: Capital Investment, Raw Material Needs & Revenue Projections" (plant economics, freight radius, margins). https://www.openpr.com/news/4373432/

10. NWPX Infrastructure, Inc., FY2025 Form 10-K (SEC), 2026. https://www.sec.gov/Archives/edgar/data/1001385/000143774926005861/nwpx20251231_10k.htm

11. L.B. Foster Company, FY2025 Form 10-K (SEC), 2026. https://www.sec.gov/Archives/edgar/data/352825/000035282526000016/fstr-20251231.htm

12. CRH plc / Oldcastle Infrastructure company overview (Growjo; CRH corporate), 2025 (~$1.1B revenue). https://growjo.com/company/Oldcastle_Infrastructure; https://oldcastleinfrastructure.com/

13. Amrize Ltd, "Amrize Debuts as Independent, Publicly Traded Company" (NYSE/SIX: AMRZ), 2025. https://www.amrize.com/us/en/newsroom/amrize-debuts-as-independent--publicly-traded-company.html

14. Commercial Metals Company, "CMC Announces Acquisition of Concrete Pipe & Precast, LLC" ($675M, 9.5× EBITDA) and completion announcement, 2025. https://www.cmc.com/getmedia/18cc8191-2603-44cf-84e9-a7c2ac215016/CMC-Announces-Acquisition-of-CPP.pdf; https://ir.cmc.com/commercial-metals-completes-acquisition-of-concrete-pipe-precast-llc/

15. Commercial Metals Company, "CMC Announces Acquisition of Foley Products Company" ($1.84B, 10.3× EBITDA) and completion announcement, 2025. https://www.cmc.com/getmedia/7d8df238-4bba-4242-bf32-129c11d3a126/CMC-Announces-Acquisition-of-Foley.pdf; https://ir.cmc.com/commercial-metals-completes-acquisition-of-foley-products-company/

16. Meridian Mergers & Acquisitions, "Precast Concrete Industry M&A Outlook," 2025 (ownership patterns, succession dynamics). https://www.meridianma.com/precast-concrete-ma-outlook/

17. Concrete Products / KPS Capital Partners, "KPS Capital Partners to Acquire The Wells Companies" (2026) and "Wells doubles geographic reach with Gate Precast deal" (2024); "Quikrete Completes Acquisition of Forterra" (~$2.3B, 2022). https://kpsfund.com/news/kps-capital-partners-to-acquire-the-wells-companies-inc/; https://concreteproducts.com/index.php/2022/03/22/quikrete-closes-on-forterra-creating-pipe-and-precast-powerhouse/

18. National Precast Concrete Association, "About NPCA" (600+ producer members worldwide). https://precast.org/npca/

19. U.S. Bureau of Labor Statistics, Producer Price Index — Other Concrete Product Manufacturing (Series PCU327390327390), via FRED. https://fred.stlouisfed.org/series/PCU327390327390

20. ConstructConnect / Construction Owners, "Data Centers Power U.S. Nonresidential Building Growth," 2025. https://www.constructionowners.com/news/data-centers-drive-nrb-growth

21. U.S. Environmental Protection Agency, "Water Infrastructure Investments" (IIJA funding); Federal Highway Administration, "Bridge Formula Program Guidance," 2022. https://www.epa.gov/infrastructure/water-infrastructure-investments; https://www.fhwa.dot.gov/bridge/20220114.cfm

22. U.S. Environmental Protection Agency, "EPA's 7th Drinking Water Infrastructure Needs Survey and Assessment" ($625B over 20 years). https://www.epa.gov/dwsrf/epas-7th-drinking-water-infrastructure-needs-survey-and-assessment

23. U.S. Environmental Protection Agency, "Clean Watersheds Needs Survey" ($630.1B clean-water needs). https://www.epa.gov/cwns

24. Omega Precast, "Precast Concrete vs Cast-In-Place: Which Is Better (2025 Guide)"; Structurama, "Precast Concrete and Modular Construction," 2025. https://omegaprecast.com/blog/precast%E2%80%91vs%E2%80%91cast%E2%80%91in%E2%80%91place/

25. U.S. Occupational Safety and Health Administration, "Crystalline Silica — General Industry and Maritime" (25 μg/m³ action level, 50 μg/m³ permissible exposure limit). https://www.osha.gov/silica-crystalline/general-industry-maritime

26. National Precast Concrete Association, silica exposure-control manual, plant certification, and Environmental Product Declaration resources; U.S. GSA low-embodied-carbon concrete standard (2022). https://precast.org/certification/; https://precast.org/environmental-product-declarations/

27. U.S. Environmental Protection Agency, "Stormwater Discharges from Industrial Activities — Sector E" (concrete facilities guidance). https://www.epa.gov/npdes/stormwater-discharges-industrial-activities-fact-sheets-and-guidance

28. U.S. Federal Highway Administration, "Buy America" (manufactured-products waiver ended March 20, 2025; 55% domestic component requirement). https://www.fhwa.dot.gov/construction/cqit/buyam.cfm

29. U.S. Environmental Protection Agency, "EPA Welcomes Input on Technical Documents for Cleaner Construction Materials" ($250M for EPD reporting, $100M for a low-carbon label). https://www.epa.gov/chemicals-under-tsca/epa-welcomes-input-technical-documents-cleaner-construction-materials-and