4 listed · Connecticut

Steel Fabricators in Connecticut

4 structural steel fabricators listed in Connecticut — Madison, Middletown, Newtown, Waterbury. Every listing is compiled from the company’s own website and links straight back to it.

Welding Works

Madison, CT

company site displays AISC certification; verify with AISC Verify with AISC.

weldingworks.com →From the company's own website · checked 2026-08-18

Shepard Steel

Middletown, CT

company site displays AISC certification; verify with AISC Verify with AISC.

shepardsteel.com →From the company's own website · checked 2026-08-18

Marcelli Steel

Newtown, CT

company site displays AISC certification; verify with AISC Verify with AISC.

marcellisteel.com →From the company's own website · checked 2026-08-18

Griffin Welding

Waterbury, CT

company site displays AISC certification; verify with AISC Verify with AISC.

griffinweldingct.com →From the company's own website · checked 2026-08-18

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How this directory is built. Every listing is compiled from the fabricator’s own public website (or claimed by the company itself) and links back to it. We do not republish AISC’s Find-a-Certified-Company database or any other protected directory, and this site is not endorsed by or affiliated with AISC. Where a company states a certification on its own site we note it, but certification status changes — verify current AISC certification, capabilities, and contact details directly with the company and with AISC before you rely on it. Reference aid, not procurement advice.