Hart Industrial Unions LLC

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Their homepage, crawled JUL 31, 2026

At a glance

EmployeesNot reported

In business since1985

Industry

Other Metal Valve and Pipe Fitting Manufacturing

HeadquartersBerlin, CT

SAM.gov UEILYMNZBK637N8

Brands

Petroleum-RevisedButtWeld-RevisedTubeSocketWeld-Revised

This company sells these brands.

HART Industrial Unions manufactures high-pressure o-ring pipe unions in multiple configurations including female threaded, male threaded, socketweld, buttweld, orifice, dielectric insulated, and copper sweat tube unions, with product lines rated at Class 3000 and Class 6000 pressures. The company serves petroleum, natural gas, piping, and plumbing applications, and offers rapid prototyping, engineering design, and made-to-order manufacturing with no minimum order quantities.

Facility	City	State	Employees	Status
Hart Industrial Unions LLC	Berlin	CT	—	● ACTIVE

Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.