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German manufacturer of polypropylene (PP) piping systems for plant engineering and building services, founded in 1973.

Last updated September 15, 2026

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Overview

aquatherm is a German manufacturer of polypropylene (PP) piping systems for plant engineering and building services. The company was founded on 17 August 1973 by Gerhard Rosenberg, starting in the basement and garage of his private home. It describes itself as the world's leading manufacturer of plastic piping systems made of polypropylene and states that it is represented in around 70 countries with long-standing partners. Its product range includes piping systems and surface heating/cooling solutions, with products such as aquatherm green and aquatherm blue, and it develops and refines its polypropylene granulate under the fusiolen brand. Production takes place exclusively at its German sites in Attendorn (headquarters) and Ennest, under the claim '100% Made in Germany'. The company reports around 500 employees in Germany, Italy and England.

History

aquatherm was founded on 17 August 1973 by Gerhard Rosenberg, initially operating from the basement and garage of his private home. From this start, the company grew into a manufacturer of polypropylene piping systems for plant engineering and building services, describing itself as the world's leading manufacturer in this field. It states that it is represented in around 70 countries with long-standing partners. The company produces exclusively at its German sites in Attendorn (headquarters) and Ennest, and reports around 500 employees in Germany, Italy and England.

Products and positioning

World's leading manufacturer of plastic piping systems made of polypropylene; '100% Made in Germany'.

  • aquatherm green

    Piping product for drinking water or hygienic requirements.

  • aquatherm green UV

    UV-resistant piping product.

  • aquatherm blue

    Piping product mentioned as releasing up to 37% fewer greenhouse gas emissions over its life cycle compared to steel and copper pipes.

  • fusiolen

    Brand under which aquatherm develops and refines its polypropylene granulate.

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