Company lists · Data refreshed September 2026

Top 25 Steel fabricators based in Chicago, United States

Name: Steel fabricators based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 57 companies tracked

RevenueBase identified 57 steel fabricators headquartered in Chicago, United States as of September 2026 and tracks 1,899 professional contacts across them, including 655 with verified work emails. Houston is the largest hub.

This list covers steel fabricators headquartered in Chicago, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 18, 2026 86% judged on-target in blind review

57Companies

1,899Contacts tracked

655Verified emails

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The 25 largest steel fabricators based in Chicago, United States

Ranked by team size

Top 25 of 57 steel fabricators based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to steel fabricators: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Zekelman Industries	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	1,001-5,000	851 contacts →
	Indirect evidence “At Zekelman Industries, we trace our legacy of delivering successful solutions back to 1877.” Source: RevenueBase Database · checked Sep 18, 2026
2	Finkl Steel	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	501-1,000	190 contacts →
	Partial evidence “Drawing on three distinct legacies of superior-quality products and services, Finkl Steel is your premier source for forged die steels, plastic mold steels, die cast tool steels…” Source: RevenueBase Database · checked Sep 18, 2026
3	Atlas Tube	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	51-200	85 contacts →
	Partial evidence “DESIGN, BUILD AND CONNECT WITH ATLAS TUBE As the leading manufacturer of structural steel tubes, we're here to help you.” Source: RevenueBase Database · checked Sep 18, 2026
4	Maruichi Leavitt Pipe & Tube, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	51-200	62 contacts →
	Partial evidence “Maruichi Leavitt Pipe & Tube has been manufacturing quality steel tubing products for 65 years.” Source: RevenueBase Database · checked Sep 18, 2026
5	Ironform	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	501-1,000	59 contacts →
	Partial evidence “Ironform is a trusted Tier 1 metal fabricator, supplying market leaders in Class 8 transportation, construction, agriculture, mining, off-road, material handling, and industrial…” Source: RevenueBase Database · checked Sep 18, 2026
6	Chicago Metal Fabricators	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	51-200	29 contacts →
	Partial evidence “Founded in 1908 on the city's southwest side, Chicago Metal Fabricators is a fully integrated fabricator with more than sq ft in Chicago and sq ft in Elk Grove Village, Illinois.” Source: RevenueBase Database · checked Sep 18, 2026
7	Charter Steel Trading	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	51-200	27 contacts →
	Partial evidence “Charter Steel is a premier steel service center distributing premium ferrous metals.” Source: RevenueBase Database · checked Sep 18, 2026
8	Naylor Pipe Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	51-200	23 contacts →
	Partial evidence “Naylor Pipe Company offers the complete line of spiralweld steel pipe.” Source: RevenueBase Database · checked Sep 18, 2026
9	TGRWA	Indirect evidence	Chicago, United StatesHQ checked Sep 18, 2026	11-50	22 contacts →
	Indirect evidence “TGRWA, LLC is a Structural Engineering firm in Chicago, Illinois specializing in new construction and renovation of building structures.” Source: RevenueBase Database · checked Sep 18, 2026
10	Cornell Forge	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	51-200	22 contacts →
	Indirect evidence “Cornell Forge Company, celebrating more than 85 years as a family-owned business, has been recognized as a leader in the forging industry with a longstanding reputation for…” Source: RevenueBase Database · checked Sep 18, 2026
11	GE Mathis Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	51-200	21 contacts →
	Partial evidence “As a fourth-generation family-owned custom metal fabricator, we pride ourselves on Quality, Integrity and Craftsmanship which was our Great Grandfather, George E.” Source: RevenueBase Database · checked Sep 18, 2026
12	Cleats Manufacturing	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	51-200	12 contacts →
	Partial evidence “Cleats Manufacturing is a premier fabricator of HVAC sheet metal duct and fittings.” Source: RevenueBase Database · checked Sep 18, 2026
13	Staalx	Strong evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	1-10	8 contacts →
	Strong evidence “StaalX is a modern B2B steel marketplace helping contractors, fabricators, distributors, and buyers source steel more efficiently across the United States.” Source: RevenueBase Database · checked Sep 18, 2026
14	Vector Custom Fabricating	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	1-10	8 contacts →
	Indirect evidence “Established 1978, Vector Fabricating, Inc.” Source: RevenueBase Database · checked Sep 18, 2026
15	R & S Construction	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	1-10	8 contacts →
	Indirect evidence “R&S Construction is a Veteran-owned company providing metal fabrication and ornamental iron work in the Chicagoland and Northwest Indiana areas.” Source: RevenueBase Database · checked Sep 18, 2026
16	Tesko Enterprises	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	11-50	7 contacts →
	Partial evidence “Tesko Enterprises, a custom architectural and ornamental metal fabricator, specializes in commercial and residential projectss.” Source: RevenueBase Database · checked Sep 18, 2026
17	American Grinding And Machine Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	51-200	6 contacts →
	Indirect evidence “American Grinding and Machine Company Specializes in Grinding, Welding, and Fabrication Services.” Source: RevenueBase Database · checked Sep 18, 2026
18	Osorio Metals Supply, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	11-50	5 contacts →
	Indirect evidence “A family-run metal service center providing a diverse and fully stocked warehouse for your metal projects.” Source: RevenueBase Database · checked Sep 18, 2026
19	Fastcam INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	11-50	5 contacts →
	Partial evidence “FastCAM Steel Profiling Software for Oxy, Plasma, Waterjet, Laser Cutting.” Source: RevenueBase Database · checked Sep 18, 2026
20	Sowlat Structural Engineers	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	11-50	4 contacts →
	Indirect evidence “Sowlat Structural Engineers is a world class structural engineering firm, based in Chicago and focused on building design.” Source: RevenueBase Database · checked Sep 18, 2026
21	David Architectural Metals, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	11-50	4 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
22	Wayward Machine CO	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	1-10	4 contacts →
	Indirect evidence “Located in Chicago, Wayward Machine Co is an artisan metal fabrication shop and design studio supplying handmade one of a kind fixtures, furniture and specialty projects to local…” Source: RevenueBase Database · checked Sep 18, 2026
23	Groovjoint	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	11-50	3 contacts →
	Partial evidence “GroovJoint: Your Partner in Stainless Steel Piping Solutions (Grooved; Press; Fabrication) Since 2003, GroovJoint has been delivering high-quality piping products for a wide range…” Source: RevenueBase Database · checked Sep 18, 2026
24	K-Display LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	11-50	2 contacts →
	Indirect evidence “K-Display is a small but dynamic team where family values and a strong commitment to innovation and craftsmanship define our work culture.” Source: RevenueBase Database · checked Sep 18, 2026
25	Chicago Steel Fabricators	Strong evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	1-10	2 contacts →
	Strong evidence “Chicago Steel Fabricators specialize in structural steel, architectural metal and custom fabrication.” Source: RevenueBase Database · checked Sep 18, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: steel fabricators. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names steel fabricators.
Partial evidence: Its own public description names part of steel fabricators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name steel fabricators. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 57 steel fabricators based in Chicago, United States

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Steel fabricators based in Chicago, United States at a glance

As of Sep 18, 2026

34.5%Verified-email coverage

33.3Average contacts per company

11-50Median size (employees)

424.6%Largest-city concentration · Houston

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 57 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among steel fabricators, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Chicago, United States whose own description of what they do matches “steel fabricators”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names steel fabricators), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among steel fabricators, and records with no verified work email. Companies headquartered outside Chicago are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 655 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 18, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Steel fabricators by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names steel fabricators, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many steel fabricators are there based in Chicago, United States?

RevenueBase identified 57 steel fabricators headquartered in Chicago, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Zekelman Industries, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most steel fabricators?

Houston leads with 242 headquartered companies, followed by New York (65) and Phoenix (58).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 655 verified decision-maker contacts tracked across these 57 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 18, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.