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NAICS 327120: Clay Building Material and Refractories Manufacturing

NAICS 327120

NAICS 327120 – Clay Building Material and Refractories Manufacturing encompasses the production of ceramic-based construction materials and high-temperature resistant products, including firebrick, structural clay tile, clay pipe, refractory bricks, and other fired clay products used in industrial, military, and infrastructure applications. These materials are critical for lining furnaces, kilns, incinerators, and military-grade thermal systems, as well as for durable drainage and structural applications in federal facilities and installations.

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 327120.

AI Industry Description

NAICS 327120 – Clay Building Material and Refractories Manufacturing encompasses the production of ceramic-based construction materials and high-temperature resistant products, including firebrick, structural clay tile, clay pipe, refractory bricks, and other fired clay products used in industrial, ...

NAICS 327120 – Clay Building Material and Refractories Manufacturing encompasses the production of ceramic-based construction materials and high-temperature resistant products, including firebrick, structural clay tile, clay pipe, refractory bricks, and other fired clay products used in industrial, military, and infrastructure applications. These materials are critical for lining furnaces, kilns, incinerators, and military-grade thermal systems, as well as for durable drainage and structural applications in federal facilities and installations. The sector supports defense, energy, and civil works projects requiring materials with exceptional thermal stability, chemical resistance, and mechanical durability under extreme conditions. While not a high-volume procurement category compared to IT or logistics, this niche is essential for mission-critical infrastructure where material performance directly impacts safety and operational continuity. No contractor data is available for this NAICS code, indicating limited visibility of prime contractors or subcontractors in government contracting databases. The competitive landscape likely includes specialized manufacturers with certifications in ASTM or military specifications, ranging from small businesses with niche refractory expertise to larger industrial ceramics producers with DOD supply chain qualifications. No agency data is available, suggesting procurement activity is decentralized or embedded within broader construction, maintenance, or environmental remediation contracts rather than tracked as standalone line items. Demand is likely driven by the Department of Defense for munitions and propulsion systems, the Department of Energy for nuclear and fossil fuel facilities, and the General Services Administration for facility upgrades requiring fire-resistant materials. The market is characterized by low competition density and high technical barriers to entry, with opportunities concentrated among firms possessing certified manufacturing processes, quality control systems compliant with MIL-STD or ASTM standards, and experience supplying to defense or federal infrastructure programs. Contractors with proven track records in refractory installation and material testing may find advantage in indirect procurement through construction or engineering services contracts.

Small business size standard

The SBA threshold that decides who can bid NAICS 327120 work as a small business.

SBA threshold
750 employees
Applies to the whole industry code

The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.

13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.

Key metrics

Federal obligations and activity under NAICS 327120, last 12 months.

Total Obligations

$383K

Last 12 months

Average Award Size

$21K

Per awarded contract

Opportunities Posted

153

Last 12 months

Active Contracts

24

Currently open

Awarded Contracts

18

Last 12 months

Awards Expiring

1

End date within 12 months

Contractors Awarded

12

Last 12 months

YoY Growth

-43.9%

vs. prior 12 months

Top contractors

Companies with the highest total award value under NAICS 327120, ranked by dollars won.

Top agencies

Federal agencies directing the most contract spending toward NAICS 327120.

Ranked by Total Awards
Department Of Defense$383K
Total$383K18

Competition

How many companies historically bid on federal awards in NAICS 327120, from bidder counts reported on USAspending.

Fewer Bidders

Median under 3 bidders per reported award. · 633 reported awards

Median Bidders

2

Per reported award, all-time

Single-Bid Awards

34%

Share of reported awards with one bidder

10+ Bidder Awards

3%

Share of reported awards with 10+ bidders

Reported Awards

633

98% of 649 total awards

Bidder Count Distribution by Fiscal Year

Share of reported awards in each bidder-count bracket per federal fiscal year.

How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.

Industry FamilyCompetitionMedian BiddersSingle-BidBidder MixReported Awards
327120This Code
Clay Building Material and Refractories Manufacturing
Fewer Bidders234%
63398% of 649
32712NAICS Industry
Usually Single-Bid159%
2,66571% of 3,738
3271Industry Group
Clay Product and Refractory Manufacturing
Crowded Field636%
36,38191% of 39,764
327Subsector
Fewer Bidders240%
127,13262% of 205,497
32Sector
Manufacturing
Moderate Competition331%
3,157,39629% of 10,993,791

Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.

Related NAICS codes

Industries similar to Clay Building Material and Refractories Manufacturing, by shared sector, subsector, and industry group.

Explore contracts across multiple NAICS codes Browse all NAICS Codes

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NAICS 327120 FAQ

Frequently Asked Questions

NAICS code 327120 covers Clay Building Material and Refractories Manufacturing. This industry comprises establishments primarily engaged in shaping, molding, baking, burning, or hardening clay refractories, nonclay refractories, ceramic tile, structural clay tile, brick, and other structural clay building materials. A refractory is a material that will retain its shape and chemical identity when subjected to high temperatures and is used in applications that require extreme resistance to heat, such as furnace linings. Cross-References. Establishments primarily engaged in--

Recently Posted in Clay Building Material and Refractories Manufacturing

NAICS: 327120
DIBBS
POTTER'S WHEEL
Solicitation # SPE8EE-27-T-0327
Solicitation SPE8EE-27-T-0327 is issued by DLA Troop Support for the procurement of six potter's wheels, identified by NSN 3630-01-573-7686. The delivery is required within 167 days after the order, with a need ship date of April 26, 2027, and a final required delivery date of June 16, 2027. The items are to be delivered FOB Origin to DLA Distribution San Joaquin in Tracy, California, where both inspection and acceptance will take place. Quotations are due by November 9, 2026. The contract mandates strict adherence to quality and packaging standards, including MIL-STD-2073-1E for packaging and MIL-STD-129 for marking. All shipments must use government or wing tip pallets, as non-government cannery pallets are prohibited. Technical and quality requirements are governed by the DLA Master List, and specific provisions such as RQ011 for the removal of government identification and RC001 for source approval documentation apply. Payment and invoicing must be processed electronically through the Wide Area WorkFlow system. Offerors must comply with the Buy American Act and Berry Amendment regarding domestic material restrictions. The solicitation is open to various small business categories under NAICS code 327120, and the government may apply a HUBZone price evaluation preference. Additionally, the contractor must adhere to cybersecurity and information security standards, including DFARS 252.204-7012 for safeguarding covered defense information and DFARS 252.204-7018 regarding telecommunications equipment restrictions. Any proposed alternate parts require a complete data package for evaluation.
CONSTRUCTION & EQUIPMENT MANU & CON

POSTED

10 days ago

DEADLINE

in 2 days
View Details
NAICS: 327120
Closed
SLED
Punderson State Park Lodge Clay Roof Tiles
Solicitation # SRC0000042052
The Ohio Department of Natural Resources is soliciting bids for the fabrication and delivery of clay roof tiles and accessories for the Punderson State Park Lodge in Newbury Township, Ohio. This material-only procurement is intended to support a roof replacement project scheduled for April 2027. The required materials include shingle-style clay tiles measuring 7 inches wide by 12 inches long by 5/8 inches thick, which must meet ASTM C1167 Grade 1 standards and feature a minimum 75-year material warranty. The tiles must match the existing building's color and texture. Necessary accessories include V-shaped ridge and hipped ridge tiles, closure pieces for the top, eave, and rake, and graduated tiles for the conical roof. The contract will be awarded to the lowest responsive and responsible bidder based on a total lump sum price. Evaluation may include preferences for Buy American, Buy Ohio, and certified veteran-friendly businesses. All materials must be delivered F.O.B. Destination to the lodge by April 1, 2027, with the supplier bearing all freight costs. The winning contractor must adhere to the State of Ohio Standard Terms and Conditions, including specific insurance requirements and compliance with state ethics and conflict of interest laws. Invoices are to be submitted electronically to Financial Shared Services for payment, typically within 30 calendar days of receipt of a proper invoice.
Dept Of Natural Resources

POSTED

19 days ago

CLOSED

15 days ago
View Details
NAICS: 327120
Closed
DIBBS
POTTER'S WHEEL
Solicitation # SPE8EE-26-T-2726
Solicitation SPE8EE-26-T-2726 is a fixed-price request for quotation issued by DLA Troop Support, Construction and Equipment Manufacturing and Construction, for the acquisition of one Potter's Wheel, identified by NSN 3630-01-573-7686. The requirement is for a quantity of one unit to be delivered to the USS SPRUANCE DDG 111 within 20 days after receipt of order. The procurement is categorized under NAICS code 327120 and requires destination inspection and acceptance per FAR 52.246-1. The contractor must adhere to strict packaging and marking standards, specifically MIL-STD-2073-1E for packaging and MIL-STD-129 for identification marking. All shipments must be on government or wing tip pallets, as non-government cannery pallets are prohibited. Technical and quality requirements are governed by the DLA Master List, including specific mandates for the removal of government identification from non-accepted supplies and the prohibition of intentionally added mercury. Administrative requirements include the use of the Wide Area WorkFlow system for electronic invoicing and receiving reports. Offerors must comply with the Buy American Act, the Berry Amendment, and various cybersecurity standards, including NIST SP 800-171 and DFARS 252.204-7012 for safeguarding covered defense information. Quotes are to be submitted via the DIBBS portal, with a requirement for offerors to disclose the use of any non-domestic materials.
CONSTRUCTION & EQUIPMENT MANU & CON

POSTED

25 days ago

CLOSED

22 days ago
View Details
NAICS: 327120
Closed
DIBBS
MORTAR, REFRACTORY
Solicitation # SPE8E5-27-T-0160
Solicitation SPE8E5-27-T-0160, issued by the Defense Logistics Agency Troop Support, Construction and Equipment, is for the procurement of five 55lb drums of refractory wet mortar (NSN 9350-00-153-6815). The material must meet ASTM F1097 Type 2 and MIL-M-15842B standards, featuring an air set design with a maximum temperature rating of 3000 degrees Fahrenheit. Delivery is required FOB Destination to the NAVSUP Fleet Logistic Center in Yokosuka, Japan, with a required delivery date of March 6, 2026. The contract mandates strict quality and safety compliance, including First Article Testing (FAT) per F1097 S1.2. A First Article Test Report (FATR) and Certificate of Conformance (CoC) must be reviewed and approved by the Contracting Officer before shipment. Additionally, the material must retain at least 85 percent of its 10-month shelf life upon receipt. Because the item is classified as hazardous material, suppliers must provide Safety Data Sheets (SDS) and labels compliant with 29 CFR 1910.1200 and Federal Standard No. 313-E. Packaging and marking must adhere to MIL-STD-129, MIL-STD-130N, and MIL-STD-2073-1E. Administrative requirements include electronic invoicing via Wide Area WorkFlow (WAWF) and compliance with the Buy American and Balance of Payments Program. The solicitation offers a price evaluation preference for certified HUBZone Small Business Concerns. All quotations must be submitted through the DLA Internet Bid Board System (DIBBS) by October 19, 2026.
Defense Logistics Agency

POSTED

about 1 month ago

CLOSED

19 days ago
View Details
NAICS: 327120
Closed
DIBBS
TUBE, METALLIC
Solicitation # SPE7M4-26-T-407P
Solicitation SPE7M4-26-T-407P, issued by the DLA Land and Maritime Fluid Handling Division, is a request for quotes for the procurement of 197 feet of metallic tubing under NAICS 327120. The required tubing must have a 1.750 inch outside diameter, be Type I round with O temper, and have a 0.035 inch wall thickness, provided in random lengths between 8 and 12 feet. Continuous product marking is mandatory, and the item is designated as a critical application item. The procurement is governed by SAE AMS-WW-T-700 and requires compliance with the DLA Master List of Technical and Quality Requirements, including specific provisions for configuration change management, measuring and test equipment, and inspection and acceptance at origin. Delivery is required within 165 days, with a need ship date of March 9, 2027, and a final required delivery date of May 7, 2027, to DLA Distribution Warner Robins in Georgia. The terms are FOB Origin, and a quantity variance of plus or minus 10 percent is permitted. Packaging and preservation must adhere to MIL-STD-2073-1E and ASTM B660 for aluminum and magnesium items, with marking following MIL-STD-129. Quality assurance involves sampling per MIL-STD-1916 or ASQ H1331, and the use of Class I ozone-depleting chemicals is strictly prohibited. The contract incorporates various FAR and DFARS clauses, including the Buy American and Balance of Payments Program and requirements for safeguarding covered defense information. Payment and invoicing must be processed electronically through the Wide Area WorkFlow system.
FLUID HANDLING DIVISION

POSTED

about 2 months ago

CLOSED

about 1 month ago
View Details

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