Company lists · Data refreshed September 2026

Top 25 Heat treating furnace manufacturers worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 1,873 companies tracked

RevenueBase identified 1,873 heat treating furnace manufacturers worldwide as of September 2026 and tracks 27,430 professional contacts across them, including 6,654 with verified work emails. The United States is the largest market and Pune the largest hub.

This list covers heat treating 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 heat treating 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

1,873Companies

27,430Contacts tracked

6,654Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest heat treating furnace manufacturers worldwide

Ranked by team size

Top 25 of 1,873 heat treating 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 heat treating 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	Bodycote	Partial evidence	Macclesfield, United KingdomHQ checked Sep 30, 2026	5,001-10,000	2,940 contacts →
	Partial evidence “With more than 165 locations in 22 countries, Bodycote is the world’s leading provider of heat treatment and specialist thermal processing services.” 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	Thermon	Indirect evidence	Austin, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	901 contacts →
	Indirect 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
4	Inductotherm Group	Partial evidence	Rancocas, NJ, United StatesHQ checked Sep 30, 2026	1,001-5,000	375 contacts →
	Partial evidence “WE BRING HEAT TO METAL.” Source: RevenueBase Database · checked Sep 30, 2026
5	Seco Warwick Group	Partial evidence	Swiebodzin, PolandHQ checked Sep 30, 2026	501-1,000	366 contacts →
	Partial evidence “SECO/WARWICK is the 1st choice supplier of solutions for heat treatment and metallurgy.” Source: RevenueBase Database · checked Sep 30, 2026
6	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
7	ALD Vacuum Technologies Gmbh	Indirect evidence	Hanau, GermanyHQ checked Sep 30, 2026	501-1,000	249 contacts →
	Indirect evidence “WELCOME TO ALD VACUUM TECHNOLOGIES.” Source: RevenueBase Database · checked Sep 30, 2026
8	Ajaxtocco Magnethermic	Partial evidence	Warren, OH, United StatesHQ checked Sep 30, 2026	201-500	234 contacts →
	Partial 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
9	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
10	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
11	Ebner Industrieofenbau	Strong evidence	Leonding, AustriaHQ checked Sep 30, 2026	1,001-5,000	194 contacts →
	Strong evidence “Global specialist in heat treatment furnace facilities.” Source: RevenueBase Database · checked Sep 30, 2026
12	Analytic Stress Relieving LLC	Indirect evidence	Lafayette, LA, United StatesHQ checked Sep 30, 2026	201-500	190 contacts →
	Indirect evidence “Analytic Stress made a commitment to quality, safety, and the customer when the company started in the Fall of 1979.” Source: RevenueBase Database · checked Sep 30, 2026
13	Aalberts Surface Technologies	Strong evidence	St. Louis, MO, United StatesHQ checked Sep 30, 2026	201-500	182 contacts →
	Strong evidence “Aalberts surface technologies - Paulo, delivers precision heat treating and thermal processing services that push the boundaries of what’s possible in metallurgical science.” Source: RevenueBase Database · checked Sep 30, 2026
14	Drever International	Partial evidence	Liège, BelgiumHQ checked Sep 30, 2026	51-200	164 contacts →
	Partial evidence “Drever International has been dedicated to advancing the technology of heat processing equipment since 1966.” Source: RevenueBase Database · checked Sep 30, 2026
15	Unitherm Engineers Limited	Partial evidence	Parel, IndiaHQ checked Sep 30, 2026	201-500	161 contacts →
	Partial evidence “is a leading engineering company specializing in commercial atmospheric heat treatment.” Source: RevenueBase Database · checked Sep 30, 2026
16	ABP Induction, LLC	Partial evidence	Dortmund, GermanyHQ checked Sep 30, 2026	201-500	152 contacts →
	Partial evidence “ABP Induction is a manufacturer of industrial induction heating and melting equipment.” Source: RevenueBase Database · checked Sep 30, 2026
17	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
18	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
19	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
20	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
21	Aichelin Unitherm	Partial evidence	Pune, IndiaHQ checked Sep 30, 2026	51-200	129 contacts →
	Partial evidence “AICHELIN UNITHERM HEAT TREATMENT SYSTEMS INDIA PVT.” Source: RevenueBase Database · checked Sep 30, 2026
22	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
23	Otto Junker Gmbh	Indirect evidence	Simmerath, GermanyHQ checked Sep 30, 2026	501-1,000	125 contacts →
	Indirect evidence “Our success story goes back to the year 1924 when Otto Junker founded OTTO JUNKER GmbH and startet to build water-cooled moulds for making brass rolling slabs - an invention of…” Source: RevenueBase Database · checked Sep 30, 2026
24	Bluewater Thermal Solutions	Indirect evidence	Greenville, SC, United StatesHQ checked Sep 30, 2026	201-500	123 contacts →
	Indirect evidence “Bluewater Thermal Solutions (BTS) is the largest commercial thermal solutions provider based in North America.” Source: RevenueBase Database · checked Sep 30, 2026
25	Thermojet Industrial Solutions	Indirect evidence	Pindamonhangaba, BrazilHQ checked Sep 30, 2026	201-500	123 contacts →
	Indirect evidence “Fundada em a Thermojet é líder em Engenharia Térmica na América Latina, com mais de aquecimentos realizados.” 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: heat treating 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 heat treating furnace manufacturers.
Partial evidence: Its own public description names part of heat treating furnace manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name heat treating 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 1,873 heat treating furnace manufacturers worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 6,654 reachable decision-makers.

Free signup · no credit card

View the full list →

Heat treating furnace manufacturers worldwide at a glance

As of Sep 30, 2026

24.3%Verified-email coverage

14.6Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Pune

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

560

11-50

767

51-200

422

201-500

501-1,000

1,001-5,000

5,001-10,000

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 heat treating 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 heat treating furnace manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “heat treating 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 heat treating 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 heat treating 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, 6,654 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.

Heat treating furnace manufacturers by location

10 lists · largest first

Every Heat treating 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 heat treating 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 heat treating furnace manufacturers are there worldwide?

RevenueBase identified 1,873 heat treating 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?

Bodycote, headquartered in Macclesfield, tops this list with the largest team on record.

Which country has the most heat treating furnace manufacturers?

The United States leads with 356 companies, followed by India (316) and Germany (152). Every heat treating furnace manufacturers list by country and city is linked on this page.

Which city has the most heat treating furnace manufacturers?

Pune leads with 29 headquartered companies, followed by Bangalore (28) and Chennai (25).

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 6,654 verified decision-maker contacts tracked across these 1,873 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.

Ready to reach these companies? Verified emails and direct dials for all 1,873 heat treating furnace manufacturers worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.