The company's object is the construction of supply and disposal pipelines and the building of conveying, operating and processing plants; the company also takes over trading businesses and operates similar business activities. Operationally it focuses on pipeline construction, other civil engineering and sewer construction as well as projects in drinking-water and district-heating supply; clients are utilities, municipal clients and general contractors (e.g. Goldbeck). At year-end 2024 the company employed 182 staff (including 12 apprentices) and maintains offices in Coburg and Schleiz; it is classified as a medium-sized corporation under § 267 para. 2 HGB. Financially the company achieved revenues of 29,085 TEUR in 2024, proposes a retained earnings (Bilanzgewinn) of €16,499,528.32 and reports an equity ratio of 67.6%. Karl Krumpholz Rohrbau GmbH is a family business.
Die Erstellung von Ver- und Entsorgungsleitungen, der Bau von Förder-, Betriebs- und Aufbereitungsanlagen, sowie alle damit zusammenhängenden Geschäfte, insbesondere die teilweise Übernahme und Fortführung des von der Kommanditgesellschaft in Firma Karl Krumholz & Co. betriebenen Handelsgeschäftes, und außerdem Übernahme, Gründung und Betrieb ähnlicher Geschäfte und die Beteiligung daran.
Converted using the official Destatis and Eurostat correspondence tables; ISIC Rev. 4 is the United Nations' international industry classification.
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Source: German Commercial Register (Handelsregister) Coburg Local Court, HRB 576 (as of 31 October 2026)
| Name | Type | City |
|---|---|---|
| Andreas Rubenbauer | Geschäftsführer(in) | Kronach |
| Klaus Rubenbauer | Geschäftsführer(in) | Kronach |
Source: German Commercial Register (Handelsregister) Coburg Local Court, HRB 576 (as of 31 October 2026)
| Date | Event Type | Event |
|---|---|---|
| 10.08.2011 | Business Address Registered | Industriestraße 30, 96317 Kronach |
| 31.03.2004 | Company Name Registered | Karl Krumpholz Rohrbau GmbH |
| 31.03.2004 | Registered Seat | Kronach |
| Date | Type | Change | Total Capital |
|---|---|---|---|
| 31.03.2004 | Share Capital Set | — | 1.000.000 € |
| Date | Contract | Value |
|---|---|---|
| 5.3.2026 | Supplier · N-ERGIE Aktiengesellschaft | 1.102.118 € |
| 17.7.2025 | Supplier · Thüringer Fernwasserversorgung | — |
Source: German Commercial Register (Handelsregister) Coburg Local Court, HRB 576 (as of 31 October 2026)
| Year | Revenue | Profit | Balance | Employees |
|---|---|---|---|---|
| 2024 | Rohergebnis€23.6M2 | €3,812,192 | €26,910,173 | 170 |
| 2023 | Rohergebnis€22M2 | €3,090,151 | €25,521,709 | 168 |
| 2022 | Rohergebnis€21.6M2 | €3,108,867 | €23,009,148 | 165 |
| 2021 | Rohergebnis€21.9M2 | €3,404,032 | €27,459,771 | 172 |
| 2020 | Rohergebnis€21.1M2 | €3,067,312 | €20,858,769 | 176 |
| 2019 | Rohergebnis€21.8M2 | €3,492,351 | €19,057,544 | 182 |
| 2018 | Rohergebnis€19.3M2 | €1,905,232 | €16,706,253 | 181 |
| 2017 | Rohergebnis€17.1M2 | €1,798,033 | €14,188,430 | — |
| 2014 | Rohergebnis€16.4M2 | €1,201,098 | €11,361,057 | 181 |
| 2013 | Rohergebnis€12.8M2 | €328,227 | €9,042,868 | 180 |
1 Small companies are not required to publish a profit-and-loss statement (§ 326 (1) HGB). The figure shown is the statutory ceiling under § 267 HGB where the balance-sheet total makes it binding — a company may exceed at most one of the three size criteria.
2 Rohergebnis nach § 276 HGB: Umsatzerlöse abzüglich Materialaufwand bzw. Herstellungskosten. Kleine und mittelgroße Kapitalgesellschaften dürfen diese Posten zusammenfassen; die Umsatzerlöse selbst sind dann nicht veröffentlicht und liegen über dem Rohergebnis.
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Source: German Commercial Register (Handelsregister) Coburg Local Court, HRB 576 (as of 31 October 2026)
| Cost type | Amount | Share |
|---|---|---|
| Personnel Costs | €12,531,109 | 87.6% |
| Depreciation | €1,745,165 | 12.2% |
| Interest & Similar | €24,561 | 0.2% |
