AI Visibility Index: Structural Steel Fabrication in Illinois

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

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

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The headline numbers

Never named by AI

111 of 122

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.

11 named at least once
111 never named

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Cell average: 0.37of 15
Across all 122 tracked companies.
Top ten average: 6.6of 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 Illinois

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

Top 10 most AI-visible Structural Steel Fabrication companies in Illinois, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Selvaggio Steel, Inc.Every answer 24 employeesSpringfield, Illinois 2 name variants Selvaggio Steelmost common14 Selvaggio Steel, Inc.1	Springfield, Illinois	15 of 15 answers
2	Lockport Steel Fabricators, LLC 100 employeesLockport, Illinois 3 name variants Lockport Steelmost common7 Lockport Steel Fabricators1 Lockport Steel, Inc.1	Lockport, Illinois	9 of 15 answers
3	Floyd Steel Erectors, Inc 17 employeesWood Dale, Illinois 4 name variants Floyd Steel Erectors, Inc.most common3 Floyd Steel Erectors / Floyd Crane & Equipment2 Floyd Steel Erectors2 Floyd Steel Erectors / Floyd Crane1	Wood Dale, Illinois	8 of 15 answers
4	K&K Iron Works Illinois 2 name variants K&K Iron Worksmost common7 K&K Iron Works LLC1	Illinois	8 of 15 answers
5	Byus Steel, Inc. Illinois 2 name variants Byus Steel, Inc.most common4 BYUS Steel2	Illinois	6 of 15 answers
6	STEELFAB, INC. 20 employeesKankakee, Illinois	Kankakee, Illinois	4 of 15 answers
7	Aetna Steel Illinois	Illinois	4 of 15 answers
8	COI Company / Chicago Ornamental Iron Illinois	Illinois	4 of 15 answers
9	Tri‑County Steel Illinois	Illinois	4 of 15 answers
10	Western Structural Company Illinois	Illinois	4 of 15 answers

27 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 Illinois. They belong to that state's ranking, not this one.

Company	State	Mentions
New Horizon Steel	Ontario	2 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 Illinois”
2“Who supplies custom structural steel building frames in Illinois”
3“I need a Illinois structural steel fabrication partner for a mid-rise commercial project, who should I talk to”
4“Top structural steel fabrication suppliers in Illinois for general contractor buyers”
5“Which Illinois structural steel fabricators can handle large welded assemblies with certified field erection support”
6“List 20 structural steel fabrication companies in Illinois 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.

kkironworks.com
4 companies
floydcrane.com
4 companies
thomasnet.comDirectory
4 companies
lockportsteel.com
3 companies
atasteelchicago.com
2 companies
byussteel.com
2 companies
giwinc.com
2 companies
mwfence.com
2 companies
selvaggiosteel.com
2 companies
tricountysteel.com
1 company
waukegansteel.com
1 company
aetnasteel.com
1 company

39 sources were cited across this cell's answers from 33 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

Illinois in context

Illinois ranks 14th 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%.

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

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