Company lists · Data refreshed September 2026

Top 25 Heat-resistant materials manufacturers based in Germany

Name: Heat-resistant materials manufacturers based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 87 companies tracked

RevenueBase identified 87 heat-resistant materials manufacturers headquartered in Germany as of September 2026 and tracks 1,703 professional contacts across them, including 539 with verified work emails. Dortmund is the largest hub.

This list covers heat-resistant materials 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 16, 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 16, 2026 86% judged on-target in blind review

87Companies

1,703Contacts tracked

539Verified emails

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The 25 largest heat-resistant materials manufacturers based in Germany

Ranked by team size

Top 25 of 87 heat-resistant materials manufacturers based in Germany, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to heat-resistant materials 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	Tmax Group	Partial evidence	Mannheim, GermanyHQ checked Sep 16, 2026	1,001-5,000	157 contacts →
	Partial evidence “We are a world-leading manufacturer of high-temperature insulation tmax is the specialist in the design and manufacture of thermal and acoustic insulation systems for all…” Source: RevenueBase Database · checked Sep 16, 2026
2	Refratechnik Group	Partial evidence	Munich, GermanyHQ checked Sep 16, 2026	1,001-5,000	128 contacts →
	Partial evidence “The Refratechnik Group is a global network of companies, active in the refractory and raw material business.” Source: RevenueBase Database · checked Sep 16, 2026
3	Intocast AG	Indirect evidence	Ratingen, GermanyHQ checked Sep 16, 2026	1,001-5,000	116 contacts →
	Indirect evidence “For over 45 years, INTOCAST AG has been one of the worldwide leading specialists for refractory products and plant engineering.” Source: RevenueBase Database · checked Sep 16, 2026
4	DBW Advanced Fiber Technologies Gmbh	Partial evidence	Bovenden, GermanyHQ checked Sep 16, 2026	501-1,000	115 contacts →
	Partial evidence “DBW Advanced Fiber Technologies GmbH We are a global developer and manufacturer of high-quality fiber and metal products for the automotive industry.” Source: RevenueBase Database · checked Sep 16, 2026
5	QSIL	Partial evidence	Ilmenau, GermanyHQ checked Sep 16, 2026	1,001-5,000	93 contacts →
	Partial evidence “QSIL is a leading international specialist for refractory, high-temperature and high-purity high-performance materials.” Source: RevenueBase Database · checked Sep 16, 2026
6	Isolite Group	Indirect evidence	Ludwigshafen Am Rhein, GermanyHQ checked Sep 16, 2026	501-1,000	82 contacts →
	Indirect evidence “ä ö.” Source: RevenueBase Database · checked Sep 16, 2026
7	HKO Trust The Experts	Partial evidence	Oberhausen, GermanyHQ checked Sep 16, 2026	201-500	63 contacts →
	Partial evidence “HKO - TRUST THE EXPERTS is a globally active manufacturer of technical textiles for extreme temperature ranges up to 1.200 °C.” Source: RevenueBase Database · checked Sep 16, 2026
8	Heck Wall Systems Gmbh	Indirect evidence	Marktredwitz, GermanyHQ checked Sep 16, 2026	51-200	44 contacts →
	Indirect evidence “HECK Wall Systems, mit Sitz in Marktredwitz, zählt mit den zwei starken Marken Rajasil und HECK zu den führenden Herstellern von Spezialbaustoffen für Bausanierung und…” Source: RevenueBase Database · checked Sep 16, 2026
9	Jünger Gräter Gmbh	Indirect evidence	Schwetzingen, GermanyHQ checked Sep 16, 2026	201-500	39 contacts →
	Indirect evidence “Welcome to Jünger+Gräter - your expert in refractory.” Source: RevenueBase Database · checked Sep 16, 2026
10	E-R-S Group	Indirect evidence	Klötze, GermanyHQ checked Sep 16, 2026	51-200	37 contacts →
	Indirect evidence “Die e-r-s group ist Ihr kompetenter Partner für hochwertige Wärmedämm- und Feuerfestlösungen in der Industrie.” Source: RevenueBase Database · checked Sep 16, 2026
11	Weerulin Gmbh	Indirect evidence	Mülheim An Der Ruhr, GermanyHQ checked Sep 16, 2026	51-200	21 contacts →
	Indirect evidence “WEERULIN develops and produces refractory products for the steel industry.” Source: RevenueBase Database · checked Sep 16, 2026
12	Culimeta Textilglas-Technologie Gmbh & Co. KG	Indirect evidence	Bersenbrück, GermanyHQ checked Sep 16, 2026	201-500	20 contacts →
	Indirect evidence “n Germany Culimeta is represented with two plants: Our plant in Bersenbrück employs more than 70 people, has a production area of approximately 4,500 m², as well as…” Source: RevenueBase Database · checked Sep 16, 2026
13	Beck U. Kaltheuner Gmbh & Co. KG	Indirect evidence	Plettenberg, GermanyHQ checked Sep 16, 2026	51-200	18 contacts →
	Indirect evidence “Feuerfeste Produkte für die Industrie: Eisen & Stahl, Aluminium, Zement, Energie, Chemie und Sonderanlagen (z.” Source: RevenueBase Database · checked Sep 16, 2026
14	VGH Group	Partial evidence	Hattingen, GermanyHQ checked Sep 16, 2026	51-200	17 contacts →
	Partial evidence “VGH manufactures and offers refractory products and services to our industrial partners worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
15	M.E. Schupp Industriekeramik Gmbh	Indirect evidence	Aachen, GermanyHQ checked Sep 16, 2026	11-50	16 contacts →
	Indirect 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 16, 2026
16	REX Industrie-Produkte	Partial evidence	Vellberg, GermanyHQ checked Sep 16, 2026	51-200	16 contacts →
	Partial evidence “At Rex Industrie-Produkte Graf von Rex GmbH located in Vellberg we are specialized in high-quality technical textiles for fire- and heat protection and thermal insulation with a…” Source: RevenueBase Database · checked Sep 16, 2026
17	Owens Corning Foamglas D-A-Ch	Indirect evidence	Hilden, GermanyHQ checked Sep 16, 2026	201-500	16 contacts →
	Indirect evidence “FOAMGLAS® ist Teil von Owens Corning, das weltweit in den Bereichen Dämmstoffe, Dacheindeckung, Abdichtung und Fiberglas-Verbundwerkstoffen tätig ist.” Source: RevenueBase Database · checked Sep 16, 2026
18	Vgt-Dyko Gmbh	Indirect evidence	Grossalmerode, GermanyHQ checked Sep 16, 2026	51-200	14 contacts →
	Indirect evidence “VGT-DYKO GmbH is providing you with refractories and fireproof ceramics of any kind.” Source: RevenueBase Database · checked Sep 16, 2026
19	B M Isol Gmbh	Indirect evidence	Viernheim, GermanyHQ checked Sep 16, 2026	51-200	13 contacts →
	Indirect evidence “B+M isol ist Dein Profi-Fachhandel für Technische Isolierungen in der Haus, Industrie- und Prozesstechnik.” Source: RevenueBase Database · checked Sep 16, 2026
20	Climowool Gmbh	Indirect evidence	Bernburg, GermanyHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “Die climowool GmbH ist ein Unternehmen der Knauf Gruppe.” Source: RevenueBase Database · checked Sep 16, 2026
21	Techno Physik Group	Indirect evidence	Essen, GermanyHQ checked Sep 16, 2026	51-200	12 contacts →
	Indirect evidence “Die TechnoPhysik Group ist mit drei Unternehmen an vier Standorten Hersteller und Anbieter innovativer Brandschutz- und Wärmedämmlösungen im Industrie- und Privatbereich.” Source: RevenueBase Database · checked Sep 16, 2026
22	Calsitherm	Partial evidence	Paderborn, GermanyHQ checked Sep 16, 2026	51-200	8 contacts →
	Partial evidence “Calsitherm is a building materials company based out of 170 Hermann-Loens-Str, 33104 Paderborn (Sennelager), North Rhine-Westphalia, Germany.” Source: RevenueBase Database · checked Sep 16, 2026
23	IWG Isolier Wendt Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 16, 2026	11-50	8 contacts →
	Indirect evidence “IWG Isolier Wendt GmbH is an established Berlin-based company with an impressive 150-year history.” Source: RevenueBase Database · checked Sep 16, 2026
24	Sika Refractories Gmbh	Indirect evidence	Dortmund, GermanyHQ checked Sep 16, 2026	1-10	6 contacts →
	Indirect evidence “Sika Refractories GmbH is a construction company based out of Germany.” Source: RevenueBase Database · checked Sep 16, 2026
25	Silca Service- UND Vertriebsgesellschaft FÜR Dämmstoffe MBH	Indirect evidence	Mettmann, GermanyHQ checked Sep 16, 2026	51-200	6 contacts →
	Indirect evidence “Silca Service- und Vertriebsgesellschaft für Dämmstoffe mbH is a member of the Calsitherm Group.” Source: RevenueBase Database · checked Sep 16, 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-resistant materials 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-resistant materials manufacturers.
Partial evidence: Its own public description names part of heat-resistant materials manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name heat-resistant materials 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 87 heat-resistant materials manufacturers based in Germany

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Heat-resistant materials manufacturers based in Germany at a glance

As of Sep 16, 2026

31.7%Verified-email coverage

19.6Average contacts per company

11-50Median size (employees)

3.4%Largest-city concentration · Dortmund

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 87 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-resistant materials 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-resistant materials 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-resistant materials 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-resistant materials 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, 539 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 16, 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-resistant materials 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-resistant materials manufacturers are there based in Germany?

RevenueBase identified 87 heat-resistant materials 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?

Tmax Group, headquartered in Mannheim, tops this list with the largest team on record.

Which city has the most heat-resistant materials manufacturers?

Dortmund leads with 3 headquartered companies, followed by Plettenberg (3) and Ratingen (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 539 verified decision-maker contacts tracked across these 87 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 16, 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.