AI Visibility Index: Tanks & Pressure Vessels in Ohio

When a buyer asks an AI assistant for a tanks & pressure vessels supplier in Ohio, these are the companies that get named. This is what we found when the cell was last measured.

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

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The headline numbers

Never named by AI

136 of 149

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.

13 named at least once
136 never named

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Cell average: 0.43of 15
Across all 149 tracked companies.
Top ten average: 7.5of 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 Ohio

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

Top 10 most AI-visible Tanks & Pressure Vessels companies in Ohio, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Starr Manufacturing Inc. 77 employeesVienna Center, Ohio 2 name variants Starr Manufacturing Inc.most common7 Starr Manufacturing6	Vienna Center, Ohio	13 of 15 answers
2	Waterford Tank & Fabrication Ohio	Ohio	13 of 15 answers
3	Buckeye Fabricating Company Springboro, Ohio 2 name variants Buckeye Fabricating Companymost common8 Buckeye Fabricating2	Springboro, Ohio	10 of 15 answers
4	Northern Manufacturing Co Inc 60 employeesOak Harbor, Ohio	Oak Harbor, Ohio	9 of 15 answers
5	Rexarc International, Inc. 40 employeesWest Alexandria, Ohio 2 name variants Rexarc Internationalmost common6 Rexarc International Inc.1	West Alexandria, Ohio	7 of 15 answers
6	Hays Fabricating & Welding Inc 27 employeesSpringfield, Ohio 3 name variants Hays Fabricating & Weldingmost common3 Hays Fabricating (Hays Tanks)2 Hays Fabricating & Hays Tanks1	Springfield, Ohio	6 of 15 answers
7	Central Fabricators Inc. 26 employeesCincinnati, Ohio 2 name variants Central Fabricatorsmost common3 Central Fabricators, Inc.2	Cincinnati, Ohio	5 of 15 answers
8	Didion Vessel, LLC Ohio	Ohio	5 of 15 answers
9	AT&F 175 employeesCleveland, Ohio	Cleveland, Ohio	4 of 15 answers
10	Gaspar Inc 55 employeesCanton, Ohio	Canton, Ohio	3 of 15 answers

18 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 Ohio. They belong to that state's ranking, not this one.

Company	State	Mentions
Alloy Engineering	Connecticut	6 of 15
MITCO	California	3 of 15
Niles Steel Tank	Michigan	2 of 15
MXD Process	Indiana	1 of 15
Superior MetalWorks	Pennsylvania	1 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 suppliers of tanks and pressure vessels in Ohio”
2“Who supplies ASME-certified stainless steel process pressure vessels in Ohio”
3“I need a Ohio tank and pressure vessel partner for a custom chemical processing line, who should I talk to”
4“Top tanks and pressure vessels suppliers in Ohio for chemical plant engineering buyers”
5“Which Ohio tank and pressure vessel fabricators can handle large-diameter, high-pressure reactor vessels”
6“List 20 tanks and pressure vessels companies in Ohio 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.

rexarc.com
3 companies
thomasnet.comDirectory
3 companies
haystanks.com
3 companies
mitcofab.com
3 companies
buckeyefabricating.com
2 companies
centralfabricators.com
2 companies
didionvessel.com
2 companies
starrmfg.com
2 companies
northernmfg.com
1 company
alloyengineering.com
1 company
ebnerfab.com
1 company
about.me
1 company

49 sources were cited across this cell's answers from 32 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

Ohio in context

Ohio ranks 13th of 17 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 10%.

Ohio (this report)Other measured statesCategory average (10%)

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