Company lists · Data refreshed September 2026
Top 25 Square and rectangular steel tubing manufacturers worldwide
RevenueBase identified 565 square and rectangular steel tubing manufacturers worldwide as of September 2026 and tracks 13,685 professional contacts across them, including 3,209 with verified work emails. The United States is the largest market and Mumbai the largest hub.
This list covers square and rectangular steel tubing manufacturers worldwide, 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 30, 2026. Country and city lists for square and rectangular steel tubing manufacturers follow the table.
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.
The 25 largest square and rectangular steel tubing manufacturers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,041 contacts → | ||||
Partial evidence “APL APOLLO TUBES LIMITED (NSE: APLAPOLLO) is the largest producer of Structural steel tubes in India, with a capacity of 2.6 million tons per annum.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 851 contacts → | ||||
Indirect evidence “At Zekelman Industries, we trace our legacy of delivering successful solutions back to 1877.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 624 contacts → | ||||
Partial evidence “We are leaders in manufacturing carbon steel tubes and components.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 599 contacts → | ||||
Strong evidence “Webco is a leading manufacturer and distributor of steel tubing.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 353 contacts → | ||||
Indirect evidence “A TUBERFIL teve início em 1966 com a comercialização de Tubos de Aço e em 1988 passou a produzir seus próprios produtos com excelência de qualidade em Indaiatuba, interior de São…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 352 contacts → | ||||
Indirect evidence “A Açotel é uma indústria de transformação e beneficiamento do aço que está há mais de 50 anos no mercado produzindo um amplo mix de produtos, utilizando insumos provenientes das…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 334 contacts → | ||||
Partial evidence “Tubos Reunidos Group is Global Leader in niche segments of Premium Seamless Steel Tubular Products.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 282 contacts → | ||||
Strong evidence “PTC is a leading manufacturer and marketer of steel tubing, pipe and bar products for the agriculture, automotive, construction, recreation and energy industries.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 245 contacts → | ||||
Partial evidence “Infra-Metals is the largest structural steel service center in the United States.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 240 contacts → | ||||
Partial evidence “Founded in 1962, Bull Moose Tube boasts more than a half-century of proven experience providing customers with superior steel pipe and tube.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 233 contacts → | ||||
Strong evidence “United Industries produces laser welded stainless steel tubing for a variety of demanding applications and markets including automotive, food processing, sanitary, ornamentals and…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 195 contacts → | ||||
Indirect evidence “A PANATLÂNTICA TUBOS é fornecedora de Tubos, Chapas, Perfis, Fitas de Slitters e Bobinas em Aço, com sede em Caxias do Sul (RS) e mais de 25 anos de atuação no mercado.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 182 contacts → | ||||
Partial evidence “voestalpine Sadef produces steel profiles on 35 roll forming lines.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 175 contacts → | ||||
Strong evidence “Lock Joint Tube manufactures mechanical and structural grade steel tubing from hot rolled, cold rolled, aluminized and galvanized steel, Lock Joint Tube services fabricators…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 174 contacts → | ||||
Partial evidence “Meta Engitech: Pioneering Excellence in Tubular Solutions Discover Meta Engitech, a global leader in precision welded steel tubes.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 124 contacts → | ||||
Partial evidence “With a wide product palette, where tubes and bars are in focus, we are Scandinavia's leading supplier of steel tube solutions to the industry.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 122 contacts → | ||||
Indirect evidence “With locations in Columbus, Indiana, and Walbridge, Ohio, we are strategically positioned to meet the needs of our customers.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 118 contacts → | ||||
Indirect evidence “Mahalakshmi Profiles Pvt.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 108 contacts → | ||||
Indirect evidence “A Perfipar foi fundada em 1969 e desde então, cresceu e foi cada vez mais sendo reconhecida pelo mercado.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 97 contacts → | ||||
Indirect evidence “ArcelorMittal Europe - Tubular Products is one of the most diversified producers of tubular solutions.#tubularsolutions #steeltubes” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 97 contacts → | ||||
Partial evidence “Ajmal Steel Tubes and Pipes Industries established in 2006, is an ISO 9001 – 2015 Certified Organization.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 86 contacts → | ||||
Partial evidence “Starting in the late Tex-Isle started a vertical integration process to position itself as the most competitive distributor of steel pipe and tube.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 85 contacts → | ||||
Strong 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 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 84 contacts → | ||||
Indirect evidence “KAMA Manufacturing is a company based in Cairo, Egypt.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 84 contacts → | ||||
Partial evidence “We are leaders in manufacturing carbon steel tubes and components.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
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: square and rectangular steel tubing manufacturers. 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 square and rectangular steel tubing manufacturers.
- Partial evidence
- Its own public description names part of square and rectangular steel tubing manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name square and rectangular steel tubing manufacturers. 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 565 square and rectangular steel tubing manufacturers worldwide
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Square and rectangular steel tubing manufacturers worldwide at a glance
As of Sep 30, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 square and rectangular steel tubing manufacturers, 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.
- Coverage
- Every country. Country and city lists for square and rectangular steel tubing manufacturers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “square and rectangular steel tubing manufacturers”. 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 square and rectangular steel tubing manufacturers), 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 square and rectangular steel tubing manufacturers, and records with no verified work email.
- 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, 3,209 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 30, 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.
Square and rectangular steel tubing manufacturers by location
4 lists · largest firstEvery Square and rectangular steel tubing manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 square and rectangular steel tubing manufacturers, 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 square and rectangular steel tubing manufacturers are there worldwide?
RevenueBase identified 565 square and rectangular steel tubing manufacturers worldwide 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?
APL Apollo Tubes LTD, headquartered in Noida, tops this list with the largest team on record.
Which country has the most square and rectangular steel tubing manufacturers?
The United States leads with 162 companies, followed by India (74) and Brazil (48). Every square and rectangular steel tubing manufacturers list by country and city is linked on this page.
Which city has the most square and rectangular steel tubing manufacturers?
Mumbai leads with 8 headquartered companies, followed by Sao Paulo (8) and Houston (6).
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 3,209 verified decision-maker contacts tracked across these 565 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 30, 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.