Company lists · Data refreshed September 2026

Top 25 Heat treatment furnace manufacturers based in Germany

Name: Heat treatment furnace manufacturers based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 173 companies tracked

RevenueBase identified 173 heat treatment furnace manufacturers headquartered in Germany as of September 2026 and tracks 2,129 professional contacts across them, including 731 with verified work emails. Dortmund is the largest hub.

This list covers heat treatment furnace manufacturers headquartered in Germany, 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.

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

173Companies

2,129Contacts tracked

731Verified emails

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The 25 largest heat treatment furnace manufacturers based in Germany

Ranked by team size

Top 25 of 173 heat treatment furnace manufacturers based in Germany, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to heat treatment 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	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
2	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
3	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
4	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
5	Nabertherm	Partial evidence	Lilienthal, GermanyHQ checked Sep 30, 2026	501-1,000	106 contacts →
	Partial evidence “With 600 employees worldwide, Nabertherm has been developing and manufacturing industrial kilns and furnaces for a wide range of applications for over 75 years.” Source: RevenueBase Database · checked Sep 30, 2026
6	Dango & Dienenthal	Indirect evidence	Siegen, GermanyHQ checked Sep 30, 2026	201-500	73 contacts →
	Indirect evidence “DANGO & DIENENTHAL is a company with a long tradition: it was founded in 1865 as a non-ferrous metal foundry by August Dango and Louis Dienenthal.” Source: RevenueBase Database · checked Sep 30, 2026
7	SMS Elotherm Group	Strong evidence	Remscheid, GermanyHQ checked Sep 30, 2026	201-500	59 contacts →
	Strong evidence “In-depth know-how of and decades of experience in industrial heating and heat treatment of metals through induction, applied to enable our customers to realize better bottom lines…” Source: RevenueBase Database · checked Sep 30, 2026
8	Strikowestofen Gmbh	Indirect evidence	Wiehl, GermanyHQ checked Sep 30, 2026	51-200	57 contacts →
	Indirect evidence “StrikoWestofen is part of Norican Group, which is home to six leading, globally operating brands: DISA, Italpresse Gauss, Monitizer, Simpson, StrikoWestofen and Wheelabrator.” Source: RevenueBase Database · checked Sep 30, 2026
9	Härtha Group	Indirect evidence	Alsdorf, GermanyHQ checked Sep 30, 2026	201-500	55 contacts →
	Indirect evidence “We improve what matters.” Source: RevenueBase Database · checked Sep 30, 2026
10	EMA Indutec Gmbh	Indirect evidence	Meckesheim, GermanyHQ checked Sep 30, 2026	51-200	54 contacts →
	Indirect evidence “With more than 75 years experience and over induction heating systems and frequency converters in long-term operation worldwide, EMA offers optimal full-service solutions in the…” Source: RevenueBase Database · checked Sep 30, 2026
11	IVA Schmetz Gmbh	Partial evidence	Menden, GermanyHQ checked Sep 30, 2026	201-500	51 contacts →
	Partial evidence “IVA Schmetz GmbH is specialized in the development and manufacturing of industrial furnaces for almost all application fields.” Source: RevenueBase Database · checked Sep 30, 2026
12	Ness Wärmetechnik Gmbh	Indirect evidence	Remshalden, GermanyHQ checked Sep 30, 2026	51-200	42 contacts →
	Indirect evidence “NESS – Your partner for process heating solutions Solutions for process heating systems for more than 50 years For more than 50 years we have been developing solutions for process…” Source: RevenueBase Database · checked Sep 30, 2026
13	Hanomag Lohnhärterei Gruppe	Indirect evidence	Hanover, GermanyHQ checked Sep 30, 2026	501-1,000	32 contacts →
	Indirect evidence “Die Hanomag Lohnhärterei ist aus der ehemaligen Betriebshärterei der Hannoverschen Maschinenbau AG -kurz Hanomag- hervorgegangen und blickt somit auf eine lange Tradition in der…” Source: RevenueBase Database · checked Sep 30, 2026
14	Upc-Marathon	Strong evidence	Göppingen, GermanyHQ checked Sep 30, 2026	51-200	31 contacts →
	Strong evidence “UPC-Marathon (formerly United Process Controls), is a globally recognized leader in industrial process control and automation within the heat treatment and combustion markets.” Source: RevenueBase Database · checked Sep 30, 2026
15	Extrutec Group	Indirect evidence	Moos Am Bodensee, GermanyHQ checked Sep 30, 2026	51-200	29 contacts →
	Indirect evidence “extrutec GmbH was founded in 2005 by the managing partner, Uwe Günter.” Source: RevenueBase Database · checked Sep 30, 2026
16	Härterei Reese	Indirect evidence	Bochum, GermanyHQ checked Sep 30, 2026	201-500	27 contacts →
	Indirect evidence “Präzisionstechnologie braucht Wärmebehandlung.” Source: RevenueBase Database · checked Sep 30, 2026
17	SHU Schwäbische Härtetechnik ULM	Indirect evidence	Ulm, GermanyHQ checked Sep 30, 2026	501-1,000	22 contacts →
	Indirect evidence “Die SHU Schwäbische Härtetechnik ist Deutschlands größte inhabergeführte Lohnhärterei an einem Standort.” Source: RevenueBase Database · checked Sep 30, 2026
18	Noxmat Gmbh	Partial evidence	Oederan, GermanyHQ checked Sep 30, 2026	11-50	21 contacts →
	Partial evidence “NOXMAT: This is us We are experts in industrial heating technology and develop, design, manufacture and distribute industrial gas burners as well as electric heating systems for…” Source: RevenueBase Database · checked Sep 30, 2026
19	Promeos Gmbh	Indirect evidence	Nuremberg, GermanyHQ checked Sep 30, 2026	11-50	20 contacts →
	Indirect evidence “promeos® ist ein weltweit führender Anbieter von flammenfreien Beheizungslösungen.” Source: RevenueBase Database · checked Sep 30, 2026
20	Intec Engineering Gmbh	Partial evidence	Bruchsal, GermanyHQ checked Sep 30, 2026	51-200	17 contacts →
	Partial evidence “INTEC Engineering GmbH, founded in 1995, is a leading global supplier of industrial process heat technologies based in Bruchsal, southern Germany.” Source: RevenueBase Database · checked Sep 30, 2026
21	M.E. Schupp Industriekeramik Gmbh	Partial evidence	Aachen, GermanyHQ checked Sep 30, 2026	11-50	16 contacts →
	Partial evidence “SCHUPP® Ceramics – High temperature metallic-ceramic products and systems for electric- and combustion-heated furnaces 560 °C – 1.850 °C.” Source: RevenueBase Database · checked Sep 30, 2026
22	Loewe Group	Indirect evidence	Oberhausen, GermanyHQ checked Sep 30, 2026	201-500	16 contacts →
	Indirect evidence “Die LOEWE Group ist ein seit drei Generationen inhabergeführtes Familienunternehmen.” Source: RevenueBase Database · checked Sep 30, 2026
23	WSP Gmbh	Strong evidence	Aachen, GermanyHQ checked Sep 30, 2026	11-50	15 contacts →
	Strong evidence “Quality and Innovation - WSP belongs to the leading companies in the field of heat treatment for metal strips.” Source: RevenueBase Database · checked Sep 30, 2026
24	Härterei Technotherm	Indirect evidence	Eschenbach, GermanyHQ checked Sep 30, 2026	51-200	14 contacts →
	Indirect evidence “Egal ob für die Automobilindustrie oder die Luft- und Raumfahrttechnik, ob Equipment für Wanderausrüstungen oder E-Bikes, unsere Dienstleistungen finden in vielen Bereichen…” Source: RevenueBase Database · checked Sep 30, 2026
25	Marx Group	Indirect evidence	Iserlohn, GermanyHQ checked Sep 30, 2026	51-200	14 contacts →
	Indirect evidence “Seit über 60 Jahren ist MARX Ihr Ansprechpartner für Schmelz- und Erwärmungsanlagen.” 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 treatment 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 treatment furnace manufacturers.
Partial evidence: Its own public description names part of heat treatment 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 treatment 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 173 heat treatment furnace manufacturers based in Germany

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Heat treatment furnace manufacturers based in Germany at a glance

As of Sep 30, 2026

34.3%Verified-email coverage

12.3Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · Dortmund

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 173 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 heat treatment 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.
What qualifies: Companies headquartered in Germany whose own description of what they do matches “heat treatment 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 treatment 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 treatment furnace manufacturers, and records with no verified work email. Companies headquartered outside Germany 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, 731 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.

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 treatment 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 treatment furnace manufacturers are there based in Germany?

RevenueBase identified 173 heat treatment furnace manufacturers headquartered in Germany 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?

ALD Vacuum Technologies Gmbh, headquartered in Hanau, tops this list with the largest team on record.

Which city has the most heat treatment furnace manufacturers?

Dortmund leads with 4 headquartered companies, followed by Hagen (4) and Aachen (3).

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 731 verified decision-maker contacts tracked across these 173 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.