Company lists · Data refreshed September 2026

Top 25 Industrial plumbing contractors based in Germany

Name: Industrial plumbing contractors based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 282 companies tracked

RevenueBase identified 282 industrial plumbing contractors headquartered in Germany as of September 2026 and tracks 649 professional contacts across them, including 138 with verified work emails. Hamburg is the largest hub.

This list covers industrial plumbing contractors 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 17, 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 17, 2026 86% judged on-target in blind review

282Companies

649Contacts tracked

138Verified emails

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The 25 largest industrial plumbing contractors based in Germany

Ranked by team size

Top 25 of 282 industrial plumbing contractors based in Germany, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial plumbing contractors: 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	Kliewe Gmbh	Partial evidence	Hamburg, GermanyHQ checked Sep 17, 2026	201-500	51 contacts →
	Partial evidence “Industrieller Rohrleitungs- und Anlagenbau Täglich setzen sich mehr als 200 Mitarbeiter dafür ein, hochwertige und langlebige Lösungen für Lagerung, Herstellung, Transport und…” Source: RevenueBase Database · checked Sep 17, 2026
2	Rothenberger Group	Partial evidence	Kelkheim (taunus), GermanyHQ checked Sep 17, 2026	1,001-5,000	33 contacts →
	Partial evidence “The ROTHENBERGER Group unites leading developers and manufacturers of pipe tools and machines for plumbing, heating, air conditioning, refrigeration, gas and environmental…” Source: RevenueBase Database · checked Sep 17, 2026
3	Exrohr	Indirect evidence	Lübeck, GermanyHQ checked Sep 17, 2026	201-500	27 contacts →
	Indirect evidence “Menschen für Sie.” Source: RevenueBase Database · checked Sep 17, 2026
4	Hans Schramm Gmbh	Partial evidence	Munich, GermanyHQ checked Sep 17, 2026	51-200	21 contacts →
	Partial evidence “Plumbing, Heating and HVAC specialist in Munich and surrounding area.” Source: RevenueBase Database · checked Sep 17, 2026
5	Wr-Gruppe	Indirect evidence	Pliezhausen, GermanyHQ checked Sep 17, 2026	51-200	13 contacts →
	Indirect evidence “Die WR-Gruppe ist ein Team Echter Service-Profis für die Bereiche Sanitär, Fenster, Wärmeerzeuger und Handel.” Source: RevenueBase Database · checked Sep 17, 2026
6	Ernst Pertler Gmbh	Indirect evidence	Munich, GermanyHQ checked Sep 17, 2026	51-200	9 contacts →
	Indirect evidence “Seit unserer Gründung im Jahr 1984 durch Ernst Pertler haben wir uns zu einem der größten Münchner spezialisierten SHK Betriebe entwickelt.” Source: RevenueBase Database · checked Sep 17, 2026
7	HGZ Gebäudetechnik	Indirect evidence	Berlin, GermanyHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “HGZ Gebäudetechnik Berlin is a construction company based out of 206 Marzahner Chaussee, Berlin, Germany.” Source: RevenueBase Database · checked Sep 17, 2026
8	Wbmax Gmbh	Partial evidence	Frankfurt, GermanyHQ checked Sep 17, 2026	51-200	7 contacts →
	Partial evidence “Wbmax GmbH delivers reliable and efficient heating, ventilation, plumbing, and electrical solutions to ensure comfortable, safe, and efficient spaces.” Source: RevenueBase Database · checked Sep 17, 2026
9	Geerkens Sanitär UND Heizung Gmbh	Indirect evidence	Rheinberg, GermanyHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “Als langjähriger Innungsfachbetrieb des Sanitär, Heizungs- und Klimahandwerks unterstützen wir Ihre Wünsche in den Fachbereichen Bäder, Wärme und erneuerbare Energien mit…” Source: RevenueBase Database · checked Sep 17, 2026
10	Arei Kanal-Service Gmbh	Indirect evidence	Düren, GermanyHQ checked Sep 17, 2026	51-200	5 contacts →
	Indirect evidence “Die AREI Kanal-Service GmbH mit Hauptsitz in Düren (NRW) ist spezialisiert auf Rohr- und Kanalreinigung, Dichtheitsprüfung, Kanaluntersuchung, Entsorgung, Kanalsanierung sowie auf…” Source: RevenueBase Database · checked Sep 17, 2026
11	Heinrich Krumme Gesellschaft FÜR Heizungs-, Klima- UND Sanitärtechnik MBH Brunsbüttel	Indirect evidence	Brunsbüttel, GermanyHQ checked Sep 17, 2026	51-200	4 contacts →
	Indirect evidence “Seit über 50 Jahren verbaut die HEINRICH KRUMME Gesellschaft für Heizungs, Klima- und Sanitärtechnik mbH energieeffiziente Haustechnik auf Großbaustellen im gesamten Bundesgebiet.” Source: RevenueBase Database · checked Sep 17, 2026
12	Brüggemeier Heizung GAS Sanitär	Indirect evidence	Delbrück, GermanyHQ checked Sep 17, 2026	51-200	4 contacts →
	Indirect evidence “Die Brüggemeier GmbH & Co.” Source: RevenueBase Database · checked Sep 17, 2026
13	KKN	Indirect evidence	Hamburg, GermanyHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “Gegenstand des Unternehmens ist die Planung und Durchführung von Kälte, Klima, Heizungs, Sanitär- und Lüftungsinstallationen, Beratung, sowie alle sonstigen mit dem Betrieb der…” Source: RevenueBase Database · checked Sep 17, 2026
14	GTB Unternehmensgruppe	Indirect evidence	Berlin, GermanyHQ checked Sep 17, 2026	51-200	4 contacts →
	Indirect evidence “GTB Unternehmensgruppe Gebäudetechnik \| Elektro \| Kundendienst \| BADWERK \| Die GTB Unternehmensgruppe steht für erstklassigen Service, geballte Kompetenz und absolute…” Source: RevenueBase Database · checked Sep 17, 2026
15	Fritz Gmbh & Co. KG	Indirect evidence	Offenburg, GermanyHQ checked Sep 17, 2026	51-200	3 contacts →
	Indirect evidence “Wir machen alles im Bereich Sanitär, Heizung und Klima.” Source: RevenueBase Database · checked Sep 17, 2026
16	DSD Industrie Rohrtechnik	Partial evidence	Delitzsch, GermanyHQ checked Sep 17, 2026	51-200	3 contacts →
	Partial evidence “Die DSD IRT ist auf industriellen Rohrleitungsbau in metallurgischen Anlagen, der petrochemischen und chemischen Industrie, Kraftwerksindustrie und Wasser- Aufbereitungsanlagen…” Source: RevenueBase Database · checked Sep 17, 2026
17	Busemeier Haustechnik Gmbh & Co. KG	Indirect evidence	Recke, GermanyHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
18	Küwa Haustechnik AG	Indirect evidence	Wagenhausen, GermanyHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
19	Hermann Schulten Gmbh	Indirect evidence	Nordhorn, GermanyHQ checked Sep 17, 2026	51-200	3 contacts →
	Indirect evidence “Das komfortable, energieeffiziente und zukunftsgerechte Wohnen ist heute mehr denn je eine Frage der inneren Werte: Die richtige Haustechnik nimmt mittlerweile einen sehr hohen…” Source: RevenueBase Database · checked Sep 17, 2026
20	Saier Gmbh	Indirect evidence	Ulm, GermanyHQ checked Sep 17, 2026	51-200	3 contacts →
	Indirect evidence “Premium-Wartung Um Ihre Anlagen nach Ihren Wünschen zu betreuen und zu warten, bieten wir Ihnen als Privatkunde drei verschiedene Wartungsmöglichkeiten an.” Source: RevenueBase Database · checked Sep 17, 2026
21	H.J. Lohmar Gmbh	Indirect evidence	Cologne, GermanyHQ checked Sep 17, 2026	51-200	3 contacts →
	Indirect evidence “Gerade im Sanitär- und Installationsbereich ändert sich unglaublich viel.” Source: RevenueBase Database · checked Sep 17, 2026
22	Hirt Accogli AG	Indirect evidence	Brugg, GermanyHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “Hirt Accogli AG ist Ihr verlässlicher Partner für hochwertige Sanitär, Heizungs- und Lüftungslösungen in Brugg.” Source: RevenueBase Database · checked Sep 17, 2026
23	Höringer Gmbh Co. KG Spenglerei Sanitär UND Heizung	Indirect evidence	Rain Am Lech, GermanyHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “Wir sind in den Bereichen Sanitär- Heizungs- und Lüftungstechnik sowie Spenglerei tätig.” Source: RevenueBase Database · checked Sep 17, 2026
24	E3 Haustechnik Gmbh	Indirect evidence	Magdeburg, GermanyHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “Mit Engagement und Fachwissen aus langjähriger Erfahrung beraten wir Sie kompetent in allen Belangen der Sanitärtechnik.” Source: RevenueBase Database · checked Sep 17, 2026
25	Technopipe Gmbh	Indirect evidence	Wehrheim, GermanyHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence “Mit einem hochqualifizierten Team aus Fachleuten arbeiten wird schnell, zuverlässig und effizient.” Source: RevenueBase Database · checked Sep 17, 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 plumbing contractors. 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 plumbing contractors.
Partial evidence: Its own public description names part of industrial plumbing contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial plumbing contractors. 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 282 industrial plumbing contractors based in Germany

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Industrial plumbing contractors based in Germany at a glance

As of Sep 17, 2026

21.3%Verified-email coverage

2.3Average contacts per company

1-10Median size (employees)

5.3%Largest-city concentration · Hamburg

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

140

11-50

51-200

201-500

1,001-5,000

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 282 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 industrial plumbing contractors, 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 “industrial plumbing contractors”. 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 plumbing contractors), 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 plumbing contractors, 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, 138 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 17, 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 industrial plumbing contractors, 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 plumbing contractors are there based in Germany?

RevenueBase identified 282 industrial plumbing contractors 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?

Kliewe Gmbh, headquartered in Hamburg, tops this list with the largest team on record.

Which city has the most industrial plumbing contractors?

Hamburg leads with 15 headquartered companies, followed by Berlin (14) and Dusseldorf (8).

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 138 verified decision-maker contacts tracked across these 282 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 17, 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.