HJ3 Composite Technologies
HJ3 Composite Technologies is a Tucson, Arizona-based manufacturer of patented carbon fiber composite repair systems for process piping, pipelines, storage tanks, concrete silos, and structural concrete. The company sells directly to Fortune 500 industrial operators across refining, agriculture, pulp and paper, water, mining, power, and infrastructure verticals.
- Company typePrivate
- Founded2002
- HeadquartersTucson, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What HJ3 Composite Technologies does
HJ3 Composite Technologies, LLC is a privately held U.S. manufacturer founded in 2002 as a technology transfer from the University of Arizona and headquartered in Tucson, Arizona. The company designs and sells patented carbon fiber composite repair systems used to restore and strengthen critical industrial infrastructure including process piping, pipelines, above-ground storage tanks, concrete silos, and structural concrete. Its product portfolio spans nine systems across core carbon fiber wraps (CarbonSeal for pipe, pipeline, and vessel repair; TankWrap for storage tanks; SiloWrap for concrete silos; StrongHold for concrete and seismic retrofits; GlassSeal MCU for moisture-tolerant applications) and complementary materials (ShapeShift high-build polymer for geometry transitions, ChemSeal chemical-resistant coatings, and FireSeal fire protection). All systems are supported by same-day engineering calculations from licensed professional engineers with stamped designs available in all 50 U.S. states, and same-day shipments.
The company operates a direct enterprise field sales model targeting Fortune 500 industrial operators and asset owners across at least eight verticals: petroleum and chemical refining, food and agriculture, pulp and paper, oil and gas distribution, water and wastewater, mining, power generation, and civil infrastructure. Pricing is quote-based with no publicly disclosed tiers, and there is no distributor or reseller layer described. Revenue is generated from one-time sales of composite repair kits and from engineering services, including on-site engineering support for large or complex projects. The company claims 20+ years of in-service history, 5M+ square feet of installed StrongHold repairs, code compliance with ASME PCC-2, ISO 24817, API 653, CSA Z662, ACI 440.2R, UL-1709, NSF-61, FDA, and NFPA-69 standards, and a portfolio of registered trademarks covering its product brands.
HJ3 is a privately held LLC with no publicly disclosed ownership, no disclosed funding rounds, no parent company, no subsidiaries, no acquisitions, no partnerships, and no disclosed management team or headcount. The company does not have an app, public API, or disclosed AI/ML capabilities; its competitive differentiation rests on materials science, regulatory qualifications, and engineered service delivery rather than software. There is no disclosed revenue figure, and ownership and financial structure represent material data gaps for any prospective investor or acquirer.
HJ3 Composite Technologies firmographics
Firmographics- Name
- HJ3 Composite Technologies
- Legal name
- HJ3 Composite Technologies, LLC
- Website
- https://hj3.com
- Company type
- Private
- Founded year
- 2002
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- HJ3 Composite Technologies is a Tucson, Arizona-based manufacturer of patented carbon fiber composite repair systems for process piping, pipelines, storage tanks, concrete silos, and structural concrete. The company sells directly to Fortune 500 industrial operators across refining, agriculture, pulp and paper, water, mining, power, and infrastructure verticals.
- Ownership category
- akta.pro rank
HJ3 Composite Technologies industry classification
Industry- Product category
- Industrial Carbon Fiber Composite Repair Systems
- NAICS
- Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance (8113)
- SIC
- Services-Miscellaneous Repair Services (7600)
- akta.pro primary industry
- HVAC Installation, Service & Repair (IMAIABAA)
Keywords
Where HJ3 Composite Technologies is headquartered
LocationHeadquarters
- HQ city
- Tucson
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
HJ3 Composite Technologies business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Technology or R&D, Operations, Marketing or Sales
Revenue model
- Composite Repair Products: Sale of engineered carbon fiber composite repair kits and systems including CarbonSeal, TankWrap, SiloWrap, StrongHold, GlassSeal, ChemSeal, and FireSeal products. Available in various resin kit sizes and fabric widths from 2-24 inches wide.
- Engineering Services: Structural calculations and engineering design performed by licensed professional engineers for code-compliant repair designs. Same-day engineering calculations with stamped designs available in 50 states.
- On-site Engineering Support: Expert engineers attend large or complex projects on-site, starting with comprehensive inspections and supporting front-end engineering through project completion.
Go-to-market motion2 records
Distribution channels1 record
Marketing channels5 records
HJ3 Composite Technologies product offering
Product offeringCore offering
HJ3 Composite Technologies manufactures and sells engineered carbon fiber composite repair systems (CarbonSeal, TankWrap, SiloWrap, StrongHold, ShapeShift, GlassSeal, ChemSeal, FireSeal) used to repair and strengthen corroded or damaged industrial infrastructure including process piping, pipelines, above-ground storage tanks, concrete silos, and concrete/masonry/steel structures. The company also provides licensed professional engineering services—same-day calculations and stamped code-compliant designs valid in all 50 US states—and on-site engineering support for large or complex repair projects.
Product overview
HJ3 Composite Technologies is a manufacturer of engineered carbon fiber composite repair systems for critical infrastructure. The product portfolio consists of nine distinct products organized into three categories: core carbon fiber repair wraps (CarbonSeal™ Pipe/Vessel Repair, CarbonSeal™ Pipeline Repair, TankWrap™, SiloWrap™, StrongHold™ Concrete Repair, and GlassSeal™ MCU), supplementary material systems (ShapeShift™ High Build Polymer for geometry transitions, ChemSeal™ Protective Coatings for chemical resistance), and protective coatings (FireSeal™ for fire resistance). These systems work together as an integrated repair solution, where ShapeShift™ prepares surfaces over complex geometries before CarbonSeal™ or GlassSeal™ wraps are applied, ChemSeal™ provides chemical protection, and FireSeal™ adds fire resistance to any composite repair system. All products are supported by same-day engineering calculations and shipments.
Differentiator
Problem solved
Functional benefit
Brands
- CarbonSeal: Carbon fiber composite repair system for pipe and pipeline repair, addressing corrosion, erosion, weld defects and metal loss. Patented technology with code-compliant designs.
- TankWrap
- SiloWrap
- StrongHold
- ShapeShift
- GlassSeal
- ChemSeal
- FireSeal
Products and services
- CarbonSeal™ Pipe & Vessel Repair Carbon fiber composite repair system for process piping and pressure vessels addressing through-wall defects, corrosion, erosion, weld defects and cracking; conforms to ASME PCC-2 Article 401 and ISO 24817, designed for industrial operators needing code-compliant repairs with little to no downtime.
- CarbonSeal™ Pipeline Repair Engineered composite repair system designed to restore strength-loss due to corrosion, dents, and gouges in high-pressure transmission and distribution pipelines; qualified for repairing defects per ASME B31G and CSA Z662 standards under 49 CFR Part 192 In-Line Inspection.
- TankWrap™ Tank Repair High-strength carbon fiber composite system for API 653 Annex J compliant repairs of above-ground storage tanks; customized for external and internal strengthening of steel and concrete tanks, serving as a structural liner restoring steel loss while protecting against harmful chemicals in immersion.
- SiloWrap™ Concrete Silo Repair Uni-axial carbon fiber reinforcement system for concrete silos offering tensile strengthening, crack mitigation, patch confinement, abrasion resistance and electrostatic dissipation; ACI 440.2R compliant and FDA 21 CFR 175.300 compliant for food-contact applications.
- StrongHold™ Concrete Repair Concrete repair and strengthening system including injection, patching, and glass & carbon fiber composite reinforcing wraps for concrete patching, structural strengthening and seismic retrofits of concrete, masonry, steel, and wood structures; 5M+ square feet repaired to date.
- GlassSeal™ MCU Pre-impregnated urethane-based fiberglass wrap for lower-pressure, lower-temperature applications in moisture-tolerant environments, including moisture-activated and subsea pipe repairs; compliant with ASME PCC-2 and ISO 24817.
- ShapeShift™ High Build Polymer System High-build polymer system designed specifically for transitioning composite repairs over big changes in geometry such as stop gaps, enclosures, flanges and valves; can be applied up to 3 inches thick in a single vertical lift.
- ChemSeal™ Protective Coating Polymer-based primers, pastes, liners and protective coatings (epoxies, vinyl esters, novolacs, urethanes) that protect concrete and steel structures from exposure to more than 300 chemicals in industrial processing facilities; API 652 compliant with FDA 21 CFR 175.300 and NSF-61 systems available.
- FireSeal™ Protective Coating Fire protection coating offering 1 to 3 hours of fire resistance (UL-1709 certified) when applied to HJ3 composite repair systems; prevents flame and smoke spread; Class 1A smoke and flame rating, tested per ASTM E84, ASTM E119, and NIST 800-53.
- Engineering Design & On-Site Engineering Services Licensed professional engineer structural calculations and stamped code-compliant repair designs delivered same day, valid in all 50 US states; on-site engineering support for large or complex projects including comprehensive inspections and front-end engineering through project completion.
Quantifiable outcome
- 40-50% stronger than competitors per ply, reducing layers, cost and installation time
- +7 more outcomes
Companies that use HJ3 Composite Technologies
Customer profileNamed customers11 records
Segments8 records
Ideal customer profiles8 records
HJ3 Composite Technologies technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature10 records
HJ3 Composite Technologies partnerships and signals
Strategic signalScale indicators7 records
Recent moves6 records
Expansion highlights6 records
HJ3 Composite Technologies competitors and assessment
Company assessmentDirect peers
- Belzona: Belzona is a direct competitor manufacturing polymer-based industrial repair composites and protective coatings for pipes, tanks, and process equipment across similar oil & gas, power, water, and chemical industry verticals. The two companies overlap in their engineered repair-kits-plus-engineering-services model for emergency and preventive infrastructure repair.
- Clock Spring: Clock Spring is a direct competitor in pipeline composite repair, offering engineered wrap systems for corroded and damaged transmission and distribution pipelines. Closely comparable to HJ3's CarbonSeal Pipeline Repair product in target use case (pipeline corrosion, dents, gouges, regulatory compliance under ASME B31G / CSA Z662 / 49 CFR).
- Fyfe Co. (Tyfo): Fyfe Co. is a direct competitor in fiber-reinforced polymer (FRP) strengthening systems for concrete, masonry, and structural infrastructure. The Tyfo system competes directly with HJ3's StrongHold concrete repair and seismic retrofit product line for civil infrastructure and structural strengthening applications.
- Devcon (ITW): Devcon (part of ITW) manufactures industrial repair epoxies, urethanes, and composite repair systems for pipes, tanks, and equipment. It directly competes with HJ3's ChemSeal coatings, ShapeShift polymer, and general-purpose composite repair products in industrial MRO applications.
Broad incumbents
- T.D. Williamson: T.D. Williamson is a broader incumbent in pipeline integrity and repair, offering hot tapping, plugging, and composite repair solutions to oil & gas pipeline operators. While larger and more diversified than HJ3, it competes head-on in composite pipeline repair and serves the same Fortune 500 transmission and distribution customers.
- Aegion: Aegion is a broader infrastructure services incumbent offering pipeline rehabilitation (Insituform), corrosion protection, and structural strengthening. It overlaps with HJ3 in pipeline composite repair and concrete structural strengthening, but as a multi-service contractor rather than a specialty product manufacturer.
- Henkel (Loctite): Henkel's Loctite brand is a broad incumbent in industrial adhesives, sealants, and repair composites used across manufacturing, MRO, and process industry maintenance. It overlaps with HJ3 in industrial repair and emergency-fix chemistries but competes primarily through distribution and breadth rather than engineered composite repair specialization.
- Shawcor: Shawcor is a broader energy services incumbent providing pipeline coating, corrosion protection, and composite repair systems to oil & gas operators globally. It overlaps with HJ3 in pipeline and tank integrity but at much larger scale and with a more diversified services-plus-products model.
- 3M: 3M is a broad industrial materials incumbent with composites, adhesives, and protective coatings portfolios that overlap thematically with HJ3's carbon fiber and polymer repair systems. While not a direct composite-repair specialist, 3M competes for adjacent industrial maintenance spend and could enter HJ3's specialty niche.
Emerging players
- Strongwell: Strongwell manufactures pultruded fiberglass reinforced polymer (FRP) structural products and custom composite fabrications. It overlaps with HJ3 in composite structural products for industrial and infrastructure applications, though Strongwell is more focused on new structural fabrication while HJ3 focuses on repair and retrofit.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
HJ3 Composite Technologies social profiles
Digital presenceHJ3 Composite Technologies compliance and trust
Trust signalCompliance10 records
HJ3 Composite Technologies financial estimates
Financial estimateRevenue estimate
Valuation estimate
HJ3 Composite Technologies leadership team
Management profileNumber of profiles
HJ3 Composite Technologies funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
HJ3 Composite Technologies M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about HJ3 Composite Technologies
What does HJ3 Composite Technologies do?
HJ3 Composite Technologies manufactures and sells engineered carbon fiber composite repair systems (CarbonSeal, TankWrap, SiloWrap, StrongHold, ShapeShift, GlassSeal, ChemSeal, FireSeal) used to repair and strengthen corroded or damaged industrial infrastructure including process piping, pipelines, above-ground storage tanks, concrete silos, and concrete/masonry/steel structures. The company also provides licensed professional engineering services—same-day calculations and stamped code-compliant designs valid in all 50 US states—and on-site engineering support for large or complex repair projects.
Is HJ3 Composite Technologies a public or private company?
HJ3 Composite Technologies is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was HJ3 Composite Technologies founded?
HJ3 Composite Technologies was founded in 2002. It employs 11 to 50 people.
Where is HJ3 Composite Technologies based?
HJ3 Composite Technologies is headquartered in Tucson, United States, in the North America region.
How does HJ3 Composite Technologies make money?
Three revenue lines are on record. Composite Repair Products are the primary driver. The others are engineering Services and on-site Engineering Support.
Who are HJ3 Composite Technologies's main competitors?
Direct peers on record are Belzona, Clock Spring, Fyfe Co. (Tyfo) and Devcon (ITW). Broad incumbents are T.D. Williamson, Aegion, Henkel (Loctite), Shawcor and 3M. Strongwell is listed as an emerging player.
Does HJ3 Composite Technologies have an API?
No public API is recorded for HJ3 Composite Technologies.
What industry is HJ3 Composite Technologies in?
HJ3 Composite Technologies's product category is Industrial Carbon Fiber Composite Repair Systems. Its primary akta.pro industry code is IMAIABAA, HVAC Installation, Service & Repair. Its NAICS code is 8113 and its SIC code is 7600.