Public Reference

Industry Primers

Bottom-up NAICS industry primers written for both public-market and private investors. Leaf industries are researched from the ground up; every group, subsector, and sector above them reads as a contrast across the industries beneath it.

2122 industries · 24 sectors · NAICS 2022

Researched with AI assistance from official U.S. statistics and independent sources, with citations on every page. Figures are not individually verified against pinned evidence — primers marked Evidence-verified are. Industry research, not investment advice. Methodology.

GroupNAICS 3271

Clay Product and Refractory Manufacturing (U.S., NAICS 3271)

A Histometrics rollup primer for a general investing audience — relevant to both public-market and private investors.

What this page is. In the North American Industry Classification System (NAICS), code 3271 is a four-digit industry group — one rung above the individual industries. It rolls up two children: 32711 — Pottery, Ceramics, and Plumbing Fixture Manufacturing and 32712 — Clay Building Material and Refractories Manufacturing. This page's job is the contrast between those two — who is bigger, who is growing, who owns them, and how the economics differ — plus the group's own federal statistics. For the company-by-company detail, read the two child primers.

1. Overview

NAICS 3271 is the corner of U.S. manufacturing that fires clay and related minerals in kilns — furnaces that run continuously at very high heat — to make finished ceramic goods. That single technology produces two businesses with almost nothing in common on the demand side:

  • The pottery/fixtures child (32711) makes the toilet and sink in a bathroom, the china plate on a table, the porcelain insulator on a power line, and — at its fast-growing tip — the precision ceramic parts inside a semiconductor tool, a hip implant, or an electric vehicle.[3]
  • The clay-building-material/refractories child (32712) makes brick, ceramic tile, and roofing tile you can see, plus refractories you never see — the heat-resistant brick, castables, and mortars that line the inside of steel furnaces, cement kilns, and glass tanks. Those linings are consumables: in steelmaking a lining may survive a single heat, several days, or a few weeks before it must be replaced.[3][5][6]

For an investor, the group as a whole is a small, mature, capital-intensive, cyclical slice of U.S. manufacturing — roughly $9.3 billion of domestic factory shipments and about 35,600 workers[1][2] — sitting beneath very large end markets (housing, remodeling, steel, electronics). It is not one story but a portfolio of two: a smaller, more top-heavy ceramics-and-fixtures business, and a larger, more fragmented building-materials-and-refractories business. Where we can now see physical output directly, it is down: the Federal Reserve's industrial-production index for the larger child (32712) stood at 75.17 in 2025 against 94.12 in 2022 (2017 = 100).[7]

Crucially, neither child has a clean U.S.-listed pure play — exposure runs through foreign parents, private companies, private-equity (PE) platforms, and diversified conglomerates. The one direct U.S. listing that has since surfaced in the child research, FGI Industries (NASDAQ: FGI, ~$130.5 million of revenue), is primarily an importer and distributor of sanitaryware rather than a domestic ceramic manufacturer.[18] The distinctive investor question at this level is therefore which child you want, and how the money reaches it.

2. What's inside — the two children and how they differ

The group splits into two national-industry lines. Both are kiln-based; almost everything else about them diverges. The table below is the heart of this page.

Dimension 32711 — Pottery, Ceramics & Plumbing Fixtures 32712 — Clay Building Material & Refractories
What it makes Vitreous-china toilets/sinks, china tableware & pottery, porcelain electrical insulators, technical/advanced ceramics Face brick, ceramic wall/floor tile, structural & roofing tile, flue liners; refractory brick, castables & mortars
Share of the group — shipments ~28% ($2.654B of $9.334B)[2] ~72% ($6.68B of $9.334B)[2]
Share of the group — workers ~34% (12,082)[1] ~66% (23,500)[1]
Share of the group — establishments ~56% (575) — more sites, smaller[1] ~44% (461) — fewer sites, bigger[1]
Avg. plant size ~21 workers/site[1] ~51 workers/site (~2.4× larger)[1]
Pay per worker ~$53,800 ($650.0M payroll)[1] ~$62,600 ($1.47B payroll)[1]
Concentration Top-heavy: top-4 firms = 52.4% of shipments; HHI 954.7[2] Fragmented nationally: top-4 = 23.3%; HHI 256[2]
Direction of travel Mature, import-pressured core + a high-growth advanced-ceramics tail (~6%/yr globally)[11] Physically contracting: output index 75.17 (2025) vs. 94.12 (2022)[7]; building side muted, refractory side better-supported by steel reshoring[9][19]
Primary demand engine Housing & remodeling + foodservice; technology (chips/medical/EV) for the advanced tail[40][12] Two engines: housing (brick/tile) and heavy industry — iron and steel are ~70% of refractory demand[6][9]
Margin read-through (listed proxies, not code averages) Specification-led upper bound: Geberit 29.4% EBITDA margin (2025)[15] Utilization-driven: Wienerberger North America 18.8% EBITDA margin in 2025, down from 24.0%[23]
Who owns them Foreign parents + private crown jewels; no domestic manufacturing pure play Global majors + PE + foreign parents; no U.S. pure play
How you invest Foreign-listed sanitaryware (LIXIL, TOTO, Geberit, Globe Union) & technical ceramics (Kyocera); small-cap FGI as an importer proxy; private/PE for the best assets Foreign-listed refractory & brick majors (RHI Magnesita, Vesuvius, Wienerberger, Soul Patts); Mohawk for tile; PE for refractory platforms

Read the table this way. The building-materials child (32712) is the bigger, blue-collar bulk of the group — about seven of every ten shipment dollars, two of every three workers, and the better-paid ones (~$62,600 versus ~$53,800 a head) — spread across many mid-size regional plants. The pottery/fixtures child (32711) is smaller and more barbell-shaped: a handful of large fixture plants plus a very long tail of tiny potteries (hence more establishments but fewer workers and less than half the output). That structural difference shows up directly in concentration — 32711's HHI of 954.7 (a few big plants over a long tail) versus 32712's 256 (regionally split brick and globally consolidated refractories). (HHI = Herfindahl-Hirschman Index, a standard concentration gauge; a market below 1,500 is "unconcentrated" by U.S. antitrust convention. CR4/CR8/CR20 = the combined shipment share of the largest 4 / 8 / 20 firms.)

The margin row is the sharpest new contrast the children supply. Both sides run kilns, but the fixtures side can earn brand-and-specification margins at the top (Geberit's 29.4% EBITDA margin, with direct materials and personnel each about 26% of sales),[15] while the brick side is a pure operating-leverage machine: Wienerberger's North American façade-brick volumes fell 8% in 2025 and its segment EBITDA margin dropped from 24.0% to 18.8% despite a 1% price increase.[23] Neither number is the code's average — they are global listed proxies — but they bracket the range.

Both children are, notably, single-child "pass-through" industries one level down: 32711 = its lone national industry 327110, and 32712 = its lone national industry 327120. That is an artifact of Census consolidation, not of genuine product simplicity: 327110 absorbed three older 2012 codes (vitreous-china fixtures, pottery/tableware, porcelain electrical supplies), and 327120 absorbed five older sub-codes (brick, ceramic tile, other structural clay, clay refractory, nonclay refractory) in 2017.[3][4] So the real product diversity of this group lives both between the two children and, importantly, inside each of them — the brick-versus-refractories split that matters most to an investor is invisible in any federal code.

One boundary that trips people up: metal faucets, valves, and shower trim are not here — they sit in NAICS 332913, so the big faucet brands (Moen, Delta, Grohe trim) are outside this group even though they are "plumbing."[3] This group is about the ceramic body, not the metal fitting.

3. Size (the group's rollup figures)

The figures below are our ingested federal ground-truth statistics for NAICS 3271 (U.S. Census Bureau). They are the sum of the two children on every physical measure.

Metric Value Source (year)
Value of shipments / receipts $9.334 billion Economic Census (2022)[2]
Establishments 1,036 County Business Patterns (2023)[1]
Firms 866 Economic Census (2022)[2]
Employment 35,582 workers County Business Patterns (2023)[1]
Annual payroll $2.121 billion (~$59,600/worker) County Business Patterns (2023)[1]
First-quarter payroll $564.5 million County Business Patterns (2023)[1]

(CBP = County Business Patterns, an annual Census establishment count; the Economic Census is the every-five-years benchmark that also reports concentration.)

Concentration of the whole group (Economic Census 2022): the largest 4 firms make 22.4% of shipments, the top 8 33.8%, the top 20 53.8%, and the top 50 71.4%; the group HHI is just 213.[2] Note the arithmetic quirk worth understanding: the group's HHI (213) is lower than either child's (954.7 and 256). That is not evidence the group is more competitive — it is a pooling artifact. Combining two only-loosely-overlapping product markets into one $9.3 billion denominator shrinks every firm's share (a sanitaryware leader that looms large in a $2.65B market is a minnow in a $9.3B one), so the squared shares that build HHI fall. Read the group HHI as a reminder that these are two separate competitive arenas glued together, not one.

Firm-count reconciliation (a small tell). The children report 536 + 334 = 870 firms, but the group shows 866 — four fewer.[1][2] That gap is firms that operate establishments in both children (counted once at the group level, twice across the children). The overlap is tiny, confirming that these really are two distinct businesses that happen to share a kiln.

What the physical data now show. Dollar shipments are a 2022 benchmark; the more current reads are volumetric and weak, and they exist only for the larger child. The Fed's industrial-production index for 32712 fell to 75.17 in 2025 from 94.12 in 2022 (2017 = 100),[7] and the Tile Council of North America put 2025 U.S. ceramic-tile consumption at 2.57 billion square feet, down 4.9%, with domestic manufacturers shipping 707.7 million square feet — the lowest annual figure since 2012.[8] Treat the $9.3 billion headline as a peak-cycle marker, not a current run-rate.

Undercount / scope caveats.

  • Imports dwarf domestic output for the light goods. The $9.3B is U.S. factory shipments only. Most tableware and decorative pottery (in 32711) is imported, and imports supplied 72.4% of U.S. ceramic-tile consumption by volume in 2025[8] — higher than the "roughly two-thirds" this page previously carried — alongside a chunk of refractory raw minerals. Domestic production materially understates U.S. consumption.
  • Artisan potters are largely invisible. Individual studio ceramicists file as nonemployers and never appear in the employer statistics above — a genuine undercount at the craft end of 32711, where small/individual ownership dominates. The producers themselves, by contrast, are well captured: this is establishment-based factory activity that the Economic Census measures cleanly.
  • Do not compare to "market" headlines. Research-firm figures for "plumbing fixtures" or "refractories markets" in the tens of billions bundle in imports, faucets/fittings, and distributor margin — none of which is in these Census production numbers.[41]

4. Investable universe (where value concentrates across the children)

The single most important fact for a public investor: there is no U.S.-listed pure play on either child, or on the group. Every liquid route is a foreign listing, a small-cap importer, or a thin slice of a diversified company; the purest ownership sits in private and PE hands. Where value concentrates differs by child.

Inside 32711 (pottery/fixtures) — value is private or foreign:

  • Crown-jewel domestic assets are private: Kohler (vitreous-china fixtures), CoorsTek (engineered technical ceramics), Fiesta Tableware (largest domestic pottery, independent since the 2020 sale of Homer Laughlin's foodservice lines).[12][38]
  • Listed exposure is foreign: LIXIL (Tokyo: 5938, owns American Standard and Grohe; Water Technology segment ~¥811.1B, North America ~¥148.3B),[13] TOTO (Tokyo: 5332; U.S. ADR TOTDY),[14] Geberit (Zurich: GEBN),[15] and Globe Union (Taiwan: 9934, owns Gerber) in sanitaryware; Kyocera (Tokyo: 6971 / NYSE: KYO) in technical ceramics.[11][12]
  • The closest direct U.S. listing is a small-cap importer: FGI Industries (NASDAQ: FGI) — ~$130.5M revenue with sanitaryware at $80.3M (61.5%) — is commercial exposure to the category rather than to domestic ceramic manufacturing, and carries heavy concentration risk (top 10 customers = 66% of sales; one supplier = 83.3% of payables).[18]
  • U.S.-listed proxies are diluted: Masco (NYSE: MAS; Plumbing Products segment ~$5.0B revenue, $895M operating profit)[16] and Fortune Brands Innovations (NYSE: FBIN; Water Innovations ~$2.6B)[17] — but their revenue is mostly metal faucets/fittings (332913), so this is adjacent, not ceramic-body, exposure.

Inside 32712 (building material/refractories) — value splits three ways:

  • Refractories (most consolidated, best-supported by replacement demand): RHI Magnesita (London: RHIM; North America segment €863M revenue in 2025, including €184M from the Resco acquisition),[19] Vesuvius (London: VSVS; £1.82B revenue in 2024, 8.4% return on sales in 2025),[21] Minerals Technologies (NYSE: MTX, a segment), and Saint-Gobain (Paris).[5] The largest North-American maker, Calderys/HarbisonWalker International, is owned by PE firm Platinum Equity.[22]
  • Brick / clay building materials: Wienerberger (Vienna: WIE; North America segment €700M revenue and €132M EBITDA in 2025; owns General Shale and Meridian Brick).[23] Glen-Gery's eight U.S. brick plants now sit under Soul Patts (ASX: SOL) following the September 2025 Brickworks merger — an ownership change since this page last listed Brickworks itself, and one that dilutes the brick signal inside a diversified investment house.[24][25] The largest U.S.-owned brick maker, Acme Brick (12 manufacturing sites in four states), sits inside Berkshire Hathaway (NYSE: BRK.B) but is immaterial to it.[27]
  • Ceramic tile: a scale-and-imports game led domestically by Dal-Tile, owned by flooring conglomerate Mohawk Industries (NYSE: MHK; Global Ceramic segment $4.289B sales, $266.7M operating income, ~6.2% margin in 2025), with imports supplying 72.4% of U.S. consumption by volume.[8][28]

A scale caution when reading those figures. Several of these segments — Masco's ~$5.0B plumbing business, Mohawk's $4.289B Global Ceramic — are individually comparable to or larger than the entire $9.3 billion domestic group. That is not a contradiction: those are global segments spanning several NAICS codes, including metal fittings and non-clay flooring. Do not net them against the Census number.

The takeaway across children: if you want ceramics/fixtures exposure you are effectively buying Japanese, Swiss, and Taiwanese listings, a small-cap importer, or private/PE deals; if you want building-materials/refractories exposure you are buying European and Australian listings, one U.S. tile conglomerate, and PE-owned refractory platforms. Full company tables, group revenues, and owner rosters are in the child primers.

5. How the money works

Owners across both children earn a spread over materials, energy, and labor in heavy, kiln-based plants — not same-store sales or recurring fees. The shared levers, and where the two children diverge:

What they share (kiln economics):

  • Capacity utilization is everything. Kilns are enormous fixed-cost assets that run best hot and continuous, so throughput and yield (fired ceramic cracks and warps) drive margin. Wienerberger's 2025 North American result is the cleanest live demonstration: an 8% volume decline pushed segment EBITDA margin from 24.0% to 18.8% even with prices up 1%.[23]
  • Energy is the swing cost. Continuous high-temperature firing — largely natural-gas-fired — is the decisive variable input (roughly 30% of brick manufacturing cost), so gas prices flow almost straight to the bottom line.[29] On the fixtures side the input mix looks different but is no less tight: at the industry's most profitable listed operator, direct materials and personnel each ran about 26.4% of sales.[15]
  • Freight defines the market and the moat. Heavy, low-value goods — toilets, brick, structural tile — are expensive to ship, so domestic plants enjoy a freight moat and markets fragment regionally. The light goods (tableware in 32711, ceramic tile in 32712) are the exception: cheap to ship and dominated by imports.[8]

Where they diverge (demand and pricing):

  • 32711 adds a high-margin, spec-driven technical-ceramics tail — parts qualified into a customer's chip-etch tool, orthopedic implant, or EV inverter — that carries pricing power and grows with technology, not housing.[12] The rest of 32711 is premiumization (one-piece toilets, bidet/washlet seats) over a steady remodel base — though premiumization increasingly shifts spending from the ceramic bowl toward electronics, seats, and valves that fall outside this code.
  • 32712's refractory side is cushioned by replacement demand — furnace linings are consumables that wear out and must be replaced regardless of new construction — which makes it structurally steadier than the purely construction-driven brick and tile side.[5][6][9] Its distinctive risk is upstream: China accounts for more than 60% of globally traded refractory raw materials, so vertical integration into non-Chinese mineral supply is a real competitive edge.[20]

6. Demand drivers

Because the group fuses one process to serve unrelated markets, it rides three demand curves at once:

  • Housing & remodeling — the swing factor for both fixtures (32711) and brick/tile (32712): single-family starts, mortgage rates, household formation, and an aging U.S. housing stock (median owner-occupied home age rose from 31 years in 2005 to 41 years in 2023) that feeds steady repair-and-remodel demand.[40][9] On the cladding side, brick has held roughly 18.5% of new single-family exterior wall share — stable in the high teens for decades, but competing against stucco (~26.8%), vinyl (~25.6%), and fast-rising fiber cement (~21.7%).[10]
  • Heavy industry, above all steel — the dominant driver of the refractory side. Sources put steel's share of refractory demand at roughly two-thirds to about 70% (the World Refractories Association says ~70%; IBISWorld's read is nearer two-thirds), with cement, glass, and nonferrous metals rounding it out; new U.S. electric-arc steel capacity and reshoring support structural demand.[6][9]
  • Technology end markets — semiconductors, medical devices, EVs, and telecom drive the fastest-growing corner of the whole group, the advanced-ceramics tail inside 32711 (a global market of about $12.86B in 2025 rising to ~$17.24B by 2030, ~6% CAGR — global and broader than this code, so directional only).[11][12]

Secondary drivers include non-residential/institutional building (hotels, schools, hospitals buy fixtures and brick in bulk) and water efficiency rules that favor high-efficiency toilets (see Regulation).

7. Regulation

Two regulatory regimes bracket the group, one per child, plus trade policy that hits both:

  • Air, dust, and carbon (hits both, hardest on 32712). Kilns are combustion sources under the Clean Air Act. EPA (U.S. Environmental Protection Agency) NESHAP/MACT standards — National Emission Standards for Hazardous Air Pollutants / Maximum Achievable Control Technology — for Brick and Structural Clay Products and for Clay Ceramics manufacturing (finalized 2015) forced control equipment and contributed to plant closures;[30] a separate Refractory Products NESHAP covers formaldehyde, hydrogen fluoride, hydrochloric acid, methanol, phenol, and polycyclic organic matter.[31] Qualifying plants also report process and combustion emissions under EPA's greenhouse-gas reporting program (Subpart ZZ, ceramics).[32] OSHA's respirable-crystalline-silica rule governs clay/shale dust, with an action level of 25 µg/m³ and a permissible exposure limit of 50 µg/m³ (8-hour TWA).[33] Carbon is the forward risk: firing clay is CO₂-intensive, so any future carbon price hits the cost base directly.
  • Water efficiency (specific to 32711). The federal Energy Policy Act of 1992 caps U.S. toilets at 1.6 gallons per flush (gpf); EPA's WaterSense label certifies "high-efficiency" toilets at 1.28 gpf and is effectively required in large states (California, Colorado, Texas, New York). A Version 2.0 tank-type specification was issued in May 2024 but its effective date is paused, leaving Version 1.2 in force.[34]
  • Trade policy (hits both, and is first-order for the light goods). Chinese ceramic goods face Section 301 tariffs (25% on most affected products, with increases finalized September 2024);[35] antidumping duties on Chinese ceramic tile run above 350%,[36] and an antidumping/countervailing petition has been pursued against imported ceramic sanitaryware.[37] With imports supplying most U.S. tile consumption and most tableware, tariff shifts move the domestic economics of both children.[8]

8. Consolidation

The two children consolidate along different axes, which is why the group looks fragmented in aggregate (HHI 213) while its parts are anything but loose:

  • 32711 has globalized rather than domestically rolled up. American Standard sits inside Japan's LIXIL;[13] Mansfield inside Colombia's Organización Corona;[39] Homer Laughlin's foodservice lines moved to Britain's Steelite in 2020 while the retail Fiesta business stayed independent.[38] Cross-border acquisition, not domestic roll-up, is the pattern — with notable reshoring at the premium end (TOTO's new $224M plant in Morrow, Georgia lifts U.S. luxury-toilet capacity ~150%).[14] Technical ceramics is its own higher-margin contest between Kyocera, CoorsTek, and the European materials houses.[12]
  • 32712 is nationally fragmented but locally and globally concentrated. The low HHI hides freight-driven regional brick oligopolies where two or three plants set the local price, while refractories consolidate fast and globally (Calderys merged with HarbisonWalker in 2023 under Platinum Equity;[22] RHI Magnesita acquired Resco in 2025, adding €184M of North American revenue[19]), with raw-material vertical integration as the playbook against China's >60% share of traded refractory minerals.[20] Brick ownership consolidated again in September 2025, when the Brickworks–Soul Patts merger moved Glen-Gery's eight U.S. plants under a diversified Australian holding company.[24][25]

Net: the group's headline concentration numbers understate real market power in both children — one is consolidated through foreign parents, the other through regional geography and global refractory majors.

9. Risks

  • Cyclicality, doubled. Housing hits the fixtures and brick/tile lines; steel and heavy industry hit refractories. The one cushion is refractory replacement demand.[6][9] The recent evidence is a real downturn, not a wobble: 32712's output index fell to 75.17 in 2025 from 94.12 in 2022, and domestic tile shipments hit their lowest level since 2012.[7][8]
  • Energy shocks. Continuous high-temperature firing makes margins acutely sensitive to natural-gas prices across the whole group (energy ≈30% of brick manufacturing cost).[29]
  • Import & trade-policy whiplash. The light goods — tableware and ceramic tile — stay structurally exposed to low-cost imports; tariff shifts cut both ways.[8][35][36]
  • Raw-material supply-chain exposure. China's >60% share of globally traded refractory raw materials is a pricing and availability risk for non-integrated producers.[20]
  • Substitution. On the building side, stucco, vinyl, fiber cement, and concrete block keep pressuring clay brick's ~18.5% cladding share; on the fixtures side, plastic, cultured marble, and enameled metal take share on price or design.[10]
  • Capital intensity & inflexibility. Kilns are expensive and hard to idle; utilization shortfalls quickly erase profit — Wienerberger's 5.2-point North American margin drop on an 8% volume decline is the live example.[23]
  • Skilled-labor scarcity. A shrinking masonry workforce raises brick's installed cost, and plants need experienced kiln, maintenance, and process-control staff — a factor cited directly in brick-asset impairment analysis.[26]
  • Decarbonization capex. CO₂-intensive firing makes future carbon rules a direct cost risk.[30][32]
  • Access risk for public investors. The best assets in both children are private, PE-owned, or foreign-listed — bringing currency risk, limited disclosure, and no clean domestic pure-play. The one direct U.S. listing carries its own concentration risk (FGI's top 10 customers = 66% of sales).[18]

10. How to invest and outlook

Choose the child first, then the vehicle.

  • For the ceramics/fixtures child (32711): public routes are foreign-listed near-pure plays — LIXIL, TOTO, Geberit, Globe Union for sanitaryware, Kyocera for technical ceramics — plus the small-cap FGI Industries for direct U.S.-listed commercial exposure (importer/distributor, with concentration caveats) and diluted U.S. proxies (Masco, Fortune Brands Innovations) that carry mostly metal exposure. The crown-jewel domestic assets (Kohler, CoorsTek, Fiesta) are reachable only via private/PE ownership. The highest-growth, highest-margin corner is the advanced-ceramics tail feeding chips, medical, and EVs — a thematic technology exposure more than a building-products one.[11][12][13][14][15][16][17][18]
  • For the building-material/refractories child (32712): public routes are all diversified or foreign — a refractories tilt (RHI Magnesita, Vesuvius, Minerals Technologies, Saint-Gobain), a brick tilt (Wienerberger, or Soul Patts where the brick signal is heavily diluted, or trace exposure via Berkshire Hathaway), or a ceramic-tile tilt (Mohawk via Dal-Tile). Private routes — PE-owned refractory platforms, strategically held brick/tile plants — are where the industry really trades, and the value lever is a regional real-asset moat: a clay reserve + an efficient kiln + a local market, with freight economics doing the rest.[5][19][21][22][23][24][27][28]

Outlook (forward-looking judgment, not federal fact). The two children point in modestly different directions. 32711 is a mature, import-pressured base with a genuinely attractive high-tech tail — best owned for the advanced-ceramics theme, indirectly, rather than as a domestic pure-play. 32712 is a defensive, cash-generative, slow-growth business currently running well below its 2022 output level, where the building side is muted by housing affordability and rates while the refractory side looks structurally better-supported by new electric-arc steel capacity, reshoring, and recurring replacement demand.[7][9][19] Across the group, the common swing risks are natural-gas prices, decarbonization capex, and raw-material supply concentration, and tariffs cut both ways.

Bottom line. NAICS 3271 is best understood as a two-child portfolio: a smaller, top-heavy ceramics-and-fixtures business (≈28% of shipments) with a high-growth technical tail, bolted to a larger, regionally-moated building-materials-and-refractories business (≈72%) whose steadiest engine is furnace-lining replacement. Neither offers a clean U.S. stock — the closest domestic listing is an importer, not a manufacturer; both reward investors who can reach foreign listings, PE platforms, or private assets, and who pick the child whose end market they actually want.


Sources

Consolidated and renumbered from the two child primers (32711 / 327110 and 32712 / 327120); group-level figures are our ingested Census ground truth for NAICS 3271.

  1. U.S. Census Bureau. County Business Patterns 2023, NAICS 3271 and children (establishments, employment, annual and Q1 payroll). https://www.census.gov/programs-surveys/cbp.html
  2. U.S. Census Bureau. 2022 Economic Census — Concentration by Largest Firms, NAICS 3271 / 32711 / 32712 (firm counts, receipts, CR4/CR8/CR20/CR50, HHI). https://www.census.gov/programs-surveys/economic-census.html
  3. U.S. Census Bureau / NAICS 2022 — definitions and scope for 3271, 327110 (Pottery, Ceramics, and Plumbing Fixtures) and 327120 (Clay Building Material and Refractories); cross-reference to 332913 (Plumbing Fixture Fitting and Trim). https://www.census.gov/naics/
  4. U.S. Bureau of Labor Statistics. "Industry Titles and NAICS Codes" (legacy codes 327121–327125 mapped to 327120; 2022 NAICS basis), 2025. https://www.bls.gov/cew/classifications/industry/industry-titles.htm
  5. Grand View Research / IMARC / Emergen. "Refractories Market — definition, applications, major producers (RHI Magnesita, Vesuvius, Saint-Gobain, Minerals Technologies)," 2025. https://www.grandviewresearch.com/horizon/outlook/refractories-market/united-states
  6. World Refractories Association. "What Are Refractories" (approximately 70% of demand from steel; lining replacement cycles), 2025. https://www.worldrefractories.org/about-refractories/what-are-refractories
  7. Federal Reserve Bank of St. Louis. "Industrial Production: NAICS 32712" (index 75.17 in 2025 vs. 94.12 in 2022, 2017 = 100), FRED, 2026. https://fred.stlouisfed.org/series/IPG32712A
  8. Tile Council of North America via TileLetter. "2025 U.S. Ceramic Tile Market Update" (consumption 2.57B sq ft, down 4.9%; domestic shipments 707.7M sq ft; imports 72.4% of consumption by volume), 2026. https://www.tileletter.com/2025-u-s-ceramic-tile-market-update/
  9. IBISWorld / PS Market Research. "Clay Brick & Product Manufacturing in the US" (steel ≈ two-thirds of refractory demand; housing-driven brick demand), 2025. https://www.ibisworld.com/united-states/industry/clay-brick-product-manufacturing/538/
  10. NAHB / Eye on Housing. "Most Common Siding Material for Single-Family Homes — 2023" (brick/brick-veneer 18.5%; stucco 26.8%; vinyl 25.6%; fiber cement 21.7%), Jul 2024. https://eyeonhousing.org/2024/07/stucco-remains-most-used-principal-exterior-wall-material/
  11. Grand View Research / Mordor Intelligence. "Advanced Ceramics Market" (~$12.86B in 2025 → ~$17.24B by 2030, ~6% CAGR), 2025–2026. https://www.grandviewresearch.com/industry-analysis/advanced-ceramics-market
  12. CoorsTek / MarketsandMarkets. "Technical Ceramics Market — CoorsTek and Kyocera leading players," 2025. https://www.coorstek.com/
  13. LIXIL Corporation. Regional sales data (Water Technology segment ~¥811.1B; North America ~¥148.3B, year ended March 2026). https://www.lixil.com/en/investor/financial/sales.html
  14. PR Newswire / TOTO USA. "TOTO Opens $224M Georgia Manufacturing Facility …," 2025 (Morrow, GA; ~+150% U.S. luxury-toilet capacity). https://www.prnewswire.com/news-releases/toto-opens-224m-georgia-manufacturing-facility-increasing-us-luxury-toilet-production-capacity-by-150-302536447.html
  15. Geberit AG. 2025 Results — Financial Year 2025 (29.4% EBITDA margin; direct materials 26.4% of sales; personnel 26.4% of sales), 2026. https://reports.geberit.com/annual-report/2025/business-report/business-and-financial-review/financial-year-2025/results.html
  16. Masco Corporation. 2025 Form 10-K (Plumbing Products segment ~$5.0B; $895M operating profit), 2026. https://www.sec.gov/Archives/edgar/data/62996/000006299626000005/mas-20251231.htm
  17. Fortune Brands Innovations, Inc. Form 10-K, FY2024 (Water Innovations segment net sales ~$2.6B; Moen, House of Rohl), 2025. https://www.sec.gov/Archives/edgar/data/1519751/000095017025026763/fbin-20241228.htm
  18. FGI Industries. Form 10-K, FY2025 (sanitaryware $80.3M / 61.5% of $130.5M revenue; top 10 customers = 66% of sales; one supplier = 83.3% of A/P), 2026. https://www.sec.gov/Archives/edgar/data/1864943/000162828026024682/fgi-20251231.htm
  19. RHI Magnesita N.V. "2025 Full-Year Results" (North America segment €863M revenue incl. €184M Resco), 2026. https://www.rhimagnesita.com/rhi-magnesita-2025-full-year-results-disciplined-execution-and-strong-h2-performance-deliver-resilient-earnings-in-challenging-market-environment/
  20. RHI Magnesita N.V. Annual Report 2025 (China >60% of globally traded refractory raw materials), 2026. https://ir.rhimagnesita.com/wp-content/uploads/2026/03/rhim-ar2025.pdf
  21. Vesuvius plc. "Full Year 2024 Results" (revenue £1,820.1M) and 2025 financial performance (return on sales 8.4%), 2025–2026. https://www.vesuvius.com/en/media/press-releases/corporate/2025/2024-full-year-results.html
  22. Platinum Equity. "Completion of HarbisonWalker International acquisition" (Calderys/HWI combination, 2023). https://www.platinumequity.com/news/platinum-equity-announces-completion-of-harbisonwalker-international-acquisition/
  23. Wienerberger AG. Annual Report 2025 (North America segment €700M revenue, €132M EBITDA; façade-brick volumes down 8%; EBITDA margin 18.8% vs. 24.0%), 2026. https://www.wienerberger.com/content/dam/corp/corporate-website/downloads/investors-downloads/2025/2025-wienerberger-Annual-Report.pdf
  24. Soul Patts. "Investor Overview" (owns former Brickworks North America operations following the Sept 23, 2025 merger), 2025. https://soulpatts.com.au/investor-centre/investor-overview
  25. Brickworks Limited. "Group Overview" (Glen-Gery: 8 operating brick plants plus distribution), 2025. https://investors.brickworks.com.au/group-overview/
  26. Brickworks Limited. "2025 Half-Year Report" (North American impairment analysis citing labor shortages, elevated material costs, delayed construction recovery), Mar 2025. https://investors.brickworks.com.au/wp-content/uploads/2025/03/01.-2025-Half-Yearly-Report-and-Accounts.pdf
  27. Berkshire Hathaway Inc. 2025 Form 10-K (Acme Brick: 12 sites in four states; seasonal and cyclical demand), SEC, 2026. https://www.sec.gov/Archives/edgar/data/1067983/000119312526083899/brka-20251231.htm
  28. Mohawk Industries Inc. 2025 Form 10-K (Global Ceramic segment $4.289B sales, $266.7M operating income, ~6.2% margin), SEC, 2026. https://www.sec.gov/Archives/edgar/data/851968/000085196826000011/mhk-20251231.htm
  29. IMARC Group / talk.build. "Clay Brick Cost Model — energy ~30% of manufacturing cost; natural-gas-fired kilns," 2024. https://www.imarcgroup.com/insight/clay-brick-cost-model
  30. U.S. Environmental Protection Agency. "NESHAP for Brick and Structural Clay Products Manufacturing; and NESHAP for Clay Ceramics Manufacturing" (final rule, Dec 2015). https://www.federalregister.gov/documents/2015/10/26/2015-25724/neshap-for-brick-and-structural-clay-products-manufacturing-and-neshap-for-clay-ceramics
  31. U.S. Environmental Protection Agency. "Refractory Products Manufacturing National Emission Standards" (formaldehyde, hydrogen fluoride, HCl, methanol, phenol, polycyclic organic matter), 2025. https://www.epa.gov/stationary-sources-air-pollution/refractory-products-manufacturing-national-emissions-standards
  32. U.S. Environmental Protection Agency. "Subpart ZZ — Ceramics Manufacturing" (greenhouse-gas reporting thresholds), 2025. https://www.epa.gov/ghgreporting/subpart-zz-ceramics-manufacturing
  33. Occupational Safety and Health Administration. "Crystalline Silica — General Industry" (action level 25 µg/m³; PEL 50 µg/m³; 8-hr TWA), 2025. https://www.osha.gov/silica-crystalline/general-industry-info
  34. U.S. Environmental Protection Agency. "Residential Toilets" and WaterSense tank-type toilet specification (1.28 gpf vs. 1.6 gpf federal standard; Version 2.0 effective date paused), 2024. https://www.epa.gov/watersense/residential-toilets
  35. White & Case LLP / USTR. "United States Finalizes Section 301 Tariff Increases on Imports from China," 2024. https://www.whitecase.com/insight-alert/united-states-finalizes-section-301-tariff-increases-imports-china
  36. Felix Deco / tariff tracker. "China Import Tariffs on Building Materials" (Chinese ceramic tile antidumping duty >350%), 2026. https://felixdeco.com/tariff-tracker/
  37. China Chamber of Commerce (CCCME) / U.S. AD-CVD petition documentation, ceramic sanitaryware petition, 2024. https://www.cccme.org.cn/Upload/file/20241121/20241121134637_9676.pdf
  38. Wikipedia. "Fiesta Tableware Company" (formerly Homer Laughlin China Co.; 2020 sale of foodservice lines to Steelite), 2024. https://en.wikipedia.org/wiki/Fiesta_Tableware_Company
  39. Supply House Times. "Mansfield Plumbing Products Acquired by Colombian Firm" (Organización Corona), 2004/2024. https://www.supplyht.com/articles/87047-mansfield-plumbing-products-acquired-by-colombian-firm
  40. Plumbing & Mechanical / The Farnsworth Group. "2026 Plumbing Industry Outlook" (aging housing stock; median owner-occupied home age 31 years in 2005 to 41 years in 2023), 2026. https://www.pmmag.com/articles/107036-cautious-growth-through-critical-change-2026-plumbing-industry-outlook
  41. Renub Research / GlobeNewswire. "North America Plumbing Fixtures & Fittings Market" (broader than the Census production codes; do not compare directly), 2026. https://www.renub.com/north-america-plumbing-fixtures-market-p.php