AI Visibility Index: Metal Service Centers in California

When a buyer asks an AI assistant for a metal service centers supplier in California, these are the companies that get named. This is what we found when the cell was last measured.

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

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The headline numbers

Never named by AI

430 of 452

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.

22 named at least once
430 never named

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Cell average: 0.14of 15
Across all 452 tracked companies.
Top ten average: 5.3of 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 California

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

Top 10 most AI-visible Metal Service Centers companies in California, measured September 30, 2026
Rank	Company	Location	AI visibility
1	Ims 30 employeesSan Diego, California	San Diego, California	8 of 15 answers
2	PDM STEEL SERVICE CENTERS, INC. Stockton, California · 2 locations 2 name variants PDM Steel Service Centers, Inc.most common4 PDM Steel Service Centers2	Stockton, California2 locations	6 of 15 answers
3	Reliance Metalcenter National City, California 3 name variants Reliance Metalcentermost common3 Reliance Metalcenter – National City2 Reliance Metalcenter (Reliance, Inc.)1	National City, California	6 of 15 answers
4	Valley Iron Inc 32 employeesFresno, California	Fresno, California	6 of 15 answers
5	Beyond Steel Inc,. 5 employeesDowney, California	Downey, California	5 of 15 answers
6	Competitive Metals 5 employeesEl Cajon, California	El Cajon, California	5 of 15 answers
7	Kloeckner Metals – Santa Fe Springs California	California	5 of 15 answers
8	Van Bebber Brothers Petaluma, California 2 name variants Van Bebber Bros.most common3 Van Bebber Bros. (Van Bebber Steel)1	Petaluma, California	4 of 15 answers
9	Barry A. Dorfman & Co. California	California	4 of 15 answers
10	California Steel Services California	California	4 of 15 answers

35 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 California. They belong to that state's ranking, not this one.

Company	State	Mentions
Crest Steel	Arizona	3 of 15
Pac West Metal Sales	Washington	3 of 15
Merit Steel USA (Merit USA)	Indiana	1 of 15
Metal Service Center (C.R. Mattson, Inc.)	Virginia	1 of 15
Reliance Metalcenter / Reliance, Inc. family	Arizona	1 of 15
Reliance, Inc. (Reliance Steel & Aluminum Co. family)	Indiana	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 metal service centers companies in California”
2“Who supplies cut-to-length stainless steel sheet and plate in California”
3“I need a California metal service center partner for just-in-time steel deliveries to a fabrication plant, who should I talk to”
4“Top metal service centers suppliers in California for OEM purchasing buyers”
5“Which California metal service centers can handle multi-grade inventory management with saw cutting and plate burning services”
6“List 20 metal service centers companies in California 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.

thomasnet.comDirectory
5 companies
harborpipe.com
4 companies
reliancemetalcentersd.com
3 companies
en.wikipedia.orgDirectory
3 companies
pattonscorp.com
3 companies
industrialmetalsupply.com
2 companies
kloecknermetals.com
2 companies
pdmsteel.com
2 companies
comanchestainless.com
2 companies
relianceunioncity.com
2 companies
trendpublishing.com
2 companies
vanbebbersteel.com
2 companies

58 sources were cited across this cell's answers from 42 domains. A directory page often stands behind several companies at once; a company's own site usually stands behind one.

California in context

California ranks 29th of 29 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 12%.

California (this report)Other measured statesCategory average (12%)

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