AI Visibility Index: Structural Steel Fabrication in Wisconsin

When a buyer asks an AI assistant for a structural steel fabrication supplier in Wisconsin, these are the companies that get named. This is what we found when the cell was last measured.

63 companies tracked
Last measured September 30, 2026
Next measurement October 30, 2026

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The headline numbers

Never named by AI

49 of 63

companies never appeared in a single buying question

They were asked the same 5 buying questions as everyone else in this cell and were not named once.

14 named at least once
49 never named

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Cell average: 1.08of 15
Across all 63 tracked companies.
Top ten average: 7.6of 15
The ten most visible companies in the cell.

A company's score is how many of the 15 measured answers named it.

The top ten in Wisconsin

These are the companies AI assistants named most often when Wisconsin buyers went looking for a supplier in this category.

Top 10 most AI-visible Structural Steel Fabrication companies in Wisconsin, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Daigle Brothers Inc 52 employeesTomahawk, Wisconsin 2 name variants Daigle Brothers, Inc.most common11 Daigle Brothers1	Tomahawk, Wisconsin	12 of 15 answers
2	Endres Manufacturing Company 42 employeesWaunakee, Wisconsin	Waunakee, Wisconsin	11 of 15 answers
3	Flash Pro Steel Wisconsin	Wisconsin	9 of 15 answers
4	Construction Supply & Erection (CSE) 60 employeesGermantown, Wisconsin 4 name variants CSE Constructionmost common4 Construction Supply & Erection, Inc. (CSE Construction)2 Construction Supply & Erection (CSE)1 CSE Construction, Inc.1	Germantown, Wisconsin	8 of 15 answers
5	Nimsgern Steel Corporation 25 employeesMinocqua, Wisconsin	Minocqua, Wisconsin	8 of 15 answers
6	Trait LLC Wisconsin	Wisconsin	7 of 15 answers
7	Cardinal Fabricating Corporation 22 employeesMilwaukee, Wisconsin	Milwaukee, Wisconsin	6 of 15 answers
8	Universal Welding & Engineering 20 employeesWaukesha, Wisconsin	Waukesha, Wisconsin	6 of 15 answers
9	Spirit Fabs, Inc. 85 employeesWrightstown, Wisconsin 2 name variants Spirit Fabs, Inc.most common3 Spirit Fabs2	Wrightstown, Wisconsin	5 of 15 answers
10	Weldcorp Mfg, LLC Wisconsin 2 name variants Weldcorp Mfg, LLCmost common3 Weldcorp Mfg.1	Wisconsin	4 of 15 answers

16 more companies were named at least once. Companies outside the top ten are counted in the averages but not named here.

Also named, based in another state

AI assistants named these companies too, but MacRAE'S lists them in a different state, not Wisconsin. They belong to that state's ranking, not this one.

Company	State	Mentions
Germantown Iron & Steel	North Carolina	7 of 15
Custom Steel, Inc.	Ontario	4 of 15
Performance Fab	California	3 of 15

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The five questions we asked

Every company in this cell is measured on the same questions, written the way a buyer would type them. That is what makes the ranking a comparison rather than a collection of anecdotes.

1“Best structural steel fabrication companies in Wisconsin”
2“Who supplies custom structural steel building frames in Wisconsin”
3“I need a Wisconsin structural steel fabrication partner for a mid-rise commercial project, who should I talk to”
4“Top structural steel fabrication suppliers in Wisconsin for general contractor buyers”
5“Which Wisconsin structural steel fabricators can handle large welded assemblies with certified field erection support”
6“List 20 structural steel fabrication companies in Wisconsin with their specialties.”the roster question

Each question is asked more than once, which is why a company's score is out of 15 answers rather than out of the number of questions.

Where AI drew its answers from

These are the sources the answers in this cell leaned on most, ranked by how many of the named companies each one stands behind.

cseconstruction.com
5 companies
gogis.com
3 companies
daiglebrothers.com
2 companies
spiritfabs.com
2 companies
weldcorpmfg.com
2 companies
universal-welding.com
1 company
cardinalfab.com
1 company
customsteelinc.com
1 company
doralcorp.net
1 company
endresmfg.com
1 company
performancefabs.com
1 company
superiorstructural.com
1 company

38 sources were cited across this cell's answers from 28 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

Wisconsin in context

Wisconsin ranks 2nd of 19 measured states in this category. Each bar is the share of that state's tracked companies that AI assistants named at least once; across every measured state in this category the share is 11%.

Wisconsin (this report)Other measured statesCategory average (11%)

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