Company lists · Data refreshed September 2026

Top 25 Industrial furnace manufacturers worldwide

Name: Industrial furnace manufacturers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 1,932 companies tracked

RevenueBase identified 1,932 industrial furnace manufacturers worldwide as of September 2026 and tracks 36,405 professional contacts across them, including 9,730 with verified work emails. India is the largest market and Ahmedabad the largest hub.

This list covers industrial furnace 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 industrial furnace 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

1,932Companies

36,405Contacts tracked

9,730Verified emails

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The 25 largest industrial furnace manufacturers worldwide

Ranked by team size

Top 25 of 1,932 industrial furnace manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to industrial furnace manufacturers: 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	RHI Magnesita	Indirect evidence	Vienna, United StatesHQ checked Sep 30, 2026	10001+	7,193 contacts →
	Indirect evidence “RHI Magnesita is the leading global supplier of high-grade refractory products, systems and solutions which are critical for high-temperature processes exceeding 1,200°C in a wide…” Source: RevenueBase Database · checked Sep 30, 2026
2	Electrotherm India Limited	Indirect evidence	Ahmedabad, IndiaHQ checked Sep 30, 2026	1,001-5,000	1,833 contacts →
	Indirect evidence “The journey of Electrotherm began in 1983 and was based on openness for ideas, eagerness to innovate, supplemented by in-house research & development and focus on customer-centric…” Source: RevenueBase Database · checked Sep 30, 2026
3	Calderys	Partial evidence	Paris, FranceHQ checked Sep 30, 2026	1,001-5,000	1,724 contacts →
	Partial evidence “Calderys is a leading global provider for industries operating in high-temperature conditions.” Source: RevenueBase Database · checked Sep 30, 2026
4	Thermon	Partial evidence	Austin, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	901 contacts →
	Partial evidence “Industrial Process Heating Solutions Through its global network, Thermon provides safe, reliable and innovative mission critical industrial process heating solutions.” Source: RevenueBase Database · checked Sep 30, 2026
5	IBAR	Indirect evidence	Poá, BrazilHQ checked Sep 30, 2026	1,001-5,000	688 contacts →
	Indirect evidence “We are IBAR, the Brazilian representative for the development of advanced solutions in refractory materials technology for 80 years.” Source: RevenueBase Database · checked Sep 30, 2026
6	SET Linings Int. S.A	Indirect evidence	Moita, PortugalHQ checked Sep 30, 2026	201-500	584 contacts →
	Indirect evidence “Set Linings is the world's fastest growing Refractory Company delivering turn-key projects around the globe with engineering, material supply, installation, dry-out and heating-up…” Source: RevenueBase Database · checked Sep 30, 2026
7	Inductotherm Group	Indirect evidence	Rancocas, NJ, United StatesHQ checked Sep 30, 2026	1,001-5,000	375 contacts →
	Indirect evidence “WE BRING HEAT TO METAL.” Source: RevenueBase Database · checked Sep 30, 2026
8	Seco Warwick Group	Indirect evidence	Swiebodzin, PolandHQ checked Sep 30, 2026	501-1,000	366 contacts →
	Indirect evidence “SECO/WARWICK is the 1st choice supplier of solutions for heat treatment and metallurgy.” Source: RevenueBase Database · checked Sep 30, 2026
9	SMS Group Italy	Indirect evidence	Tarcento, ItalyHQ checked Sep 30, 2026	501-1,000	318 contacts →
	Indirect evidence “SMS group S.p.A.” Source: RevenueBase Database · checked Sep 30, 2026
10	Fosbel INC	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 30, 2026	501-1,000	300 contacts →
	Partial evidence “Fosbel is the world leader in coke oven battery and glass furnace refractory maintenance services, rebuilds and construction.” Source: RevenueBase Database · checked Sep 30, 2026
11	Heurtey Petrochem Solutions	Partial evidence	Rueil-malmaison, FranceHQ checked Sep 30, 2026	1,001-5,000	277 contacts →
	Partial evidence “Heurtey Petrochem Solutions is a world leader in process furnaces for refining, petrochemicals, syngas and hydrogen markets.” Source: RevenueBase Database · checked Sep 30, 2026
12	Eisenmann INC	Indirect evidence	Greenville, SC, United StatesHQ checked Sep 30, 2026	501-1,000	241 contacts →
	Indirect evidence “Eisenmann is a leading international technology provider for custom-designed surface finishing, material flow automation, environmental as well as process & high-temperature…” Source: RevenueBase Database · checked Sep 30, 2026
13	Ajaxtocco Magnethermic	Strong evidence	Warren, OH, United StatesHQ checked Sep 30, 2026	201-500	234 contacts →
	Strong evidence “Ajax TOCCO Magnethermic® designs and manufactures world class induction heating and melting equipment for various industries and applications throughout the world.” Source: RevenueBase Database · checked Sep 30, 2026
14	BTU International	Indirect evidence	Westford, MA, United StatesHQ checked Sep 30, 2026	201-500	218 contacts →
	Indirect evidence “BTU International, a wholly-owned subsidiary of Amtech Group (Nasdaq: ASYS), is a global supplier and technology leader of advanced thermal processing equipment solutions in the…” Source: RevenueBase Database · checked Sep 30, 2026
15	Insertec Furnaces & Refractories	Partial evidence	Basauri, SpainHQ checked Sep 30, 2026	201-500	211 contacts →
	Partial evidence “Insertec is a consolidated, 100% privately owned group operating internationally in the industrial heat sector.” Source: RevenueBase Database · checked Sep 30, 2026
16	Ebner Industrieofenbau	Partial evidence	Leonding, AustriaHQ checked Sep 30, 2026	1,001-5,000	194 contacts →
	Partial evidence “Global specialist in heat treatment furnace facilities.” Source: RevenueBase Database · checked Sep 30, 2026
17	Drever International	Indirect evidence	Liège, BelgiumHQ checked Sep 30, 2026	51-200	164 contacts →
	Indirect evidence “Drever International has been dedicated to advancing the technology of heat processing equipment since 1966.” Source: RevenueBase Database · checked Sep 30, 2026
18	ABP Induction, LLC	Strong evidence	Dortmund, GermanyHQ checked Sep 30, 2026	201-500	152 contacts →
	Strong evidence “ABP Induction is a manufacturer of industrial induction heating and melting equipment.” Source: RevenueBase Database · checked Sep 30, 2026
19	Rath Group	Indirect evidence	Vienna, AustriaHQ checked Sep 30, 2026	501-1,000	150 contacts →
	Indirect evidence “RATH is a refractory producer and is specializing in high temperature heat containment, thermal processing, and thermal measurement needs of its customers.” Source: RevenueBase Database · checked Sep 30, 2026
20	GHI Smart Furnaces	Indirect evidence	Galdakao, SpainHQ checked Sep 30, 2026	51-200	140 contacts →
	Indirect evidence “A family-owned company founded in 1937 seeking excellence in supplying turnkey plants for aluminium recycling.” Source: RevenueBase Database · checked Sep 30, 2026
21	Onejoon Group	Partial evidence	Bovenden, GermanyHQ checked Sep 30, 2026	201-500	137 contacts →
	Partial evidence “ONEJOON GmbH is a Germany-based thermal processing equipment manufacturer with locations in Bovenden and Böblingen.” Source: RevenueBase Database · checked Sep 30, 2026
22	Plasma Induction India Pvt. LTD	Strong evidence	Kalol, IndiaHQ checked Sep 30, 2026	51-200	137 contacts →
	Strong evidence “A leading manufacturer of quality based and most reliable equipment like- Induction Melting Furnace - Induction Heating & Hardening equipment - Vacuum Induction Melting Furnace -…” Source: RevenueBase Database · checked Sep 30, 2026
23	PT Aldzama	Partial evidence	Gresik, IndonesiaHQ checked Sep 30, 2026	51-200	135 contacts →
	Partial evidence “Established in 2008, Aldzama proudly stands as Indonesia leading expert in furnace and kiln services With a steadfast dedication to safety, innovation, and sustainability, we…” Source: RevenueBase Database · checked Sep 30, 2026
24	Aichelin Unitherm	Indirect evidence	Pune, IndiaHQ checked Sep 30, 2026	51-200	129 contacts →
	Indirect evidence “AICHELIN UNITHERM HEAT TREATMENT SYSTEMS INDIA PVT.” Source: RevenueBase Database · checked Sep 30, 2026
25	Petro-Chem Development Co., INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	501-1,000	127 contacts →
	Partial evidence “Petro-Chem Development Co, Inc (PCD) was founded in 1939 and has been recognized as a leader in the design and production of fired heaters and furnaces.” Source: RevenueBase Database · checked Sep 30, 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: industrial furnace 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 industrial furnace manufacturers.
Partial evidence: Its own public description names part of industrial furnace manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial furnace 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 1,932 industrial furnace manufacturers worldwide

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Industrial furnace manufacturers worldwide at a glance

As of Sep 30, 2026

26.7%Verified-email coverage

18.8Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Ahmedabad

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

608

11-50

722

51-200

429

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 industrial furnace 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 industrial furnace manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “industrial furnace 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 industrial furnace 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 industrial furnace 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, 9,730 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.

Industrial furnace manufacturers by location

8 lists · largest first

Every Industrial furnace 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 industrial furnace 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 industrial furnace manufacturers are there worldwide?

RevenueBase identified 1,932 industrial furnace 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?

RHI Magnesita, headquartered in Vienna, tops this list with the largest team on record.

Which country has the most industrial furnace manufacturers?

India leads with 330 companies, followed by the United States (248) and Germany (163). Every industrial furnace manufacturers list by country and city is linked on this page.

Which city has the most industrial furnace manufacturers?

Ahmedabad leads with 32 headquartered companies, followed by Chennai (25) and Kolkata (21).

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 9,730 verified decision-maker contacts tracked across these 1,932 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.