This series is lined with Polyurethane. It is designed to allow the transport of abrasive alkalis and acids. The shore hardness of the inner layer can be adapted to the application parameters. The outer pipe is pressure bearing. Operating pressures up to 63 bar and nominal diameters from DN 80 to DN 300 have already been realized. Pipe lengths of up to 9 m are possible. Part specifications are specified according to the application and discussed with customers.