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HJ3 Composite Technologies, LLC

HJ3 manufactures, engineers, and installs advanced composite systems used to strengthen the world’s corroding and degrading infrastructure at a 60% - 90% cost savings compared to alternative repairs or replacement.

4100 South Fremont Avenue, Tucson, AZ 85714, United States

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Our Company

Supported by over 25 years of large scale testing, including 20,000 hours of product durability testing in aggressive environments, HJ3 offers the most comprehensive line of strengthening products in the world for fortifying and protecting structures against earthquakes, blasts, and environmental damage. HJ3 services the residential, commercial, industrial and blast mitigation markets with its StrongHold, HJ3 Civil, CarbonSeal and BlastSeal product lines. With over 10,000 successful applications performed worldwide, HJ3 has supported Fortune 500 companies such as British Petroleum, Shell, Valero, Conoco Phillips, Tesoro, Freeport-McMoRan, Asarco, and Georgia Pacific.


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  • Location:

    Other: 4100 South Fremont Avenue, Tucson, AZ 85714, United States