News 100- years- service-lifetime prediction of Polyolefin gravity sewer systems The prediction of the life expectancy of plastic pipe systems is well documented for pressure applications but for non-pressure application in sewage and drainage a scientific approach for prediction lifetime was not available. Service Downloads From catalogues, brochures, specifications or installation manuals. In this area you will find a lot of information about our products.Find here information about our products. About us Contact us You have a questions or need more information about our products, feel free to contact us. We would love to help you. For Designers Find here information espacially for designers. For Customers Find here information about our products.