News Butt welding of polypropylene pipes type PP Mono is a fact! COMPACT SMOOTH POLYPROPYLENE PIPE SYSTEMS FOR SEWAGE INFRASTRUCTURE - PP MONO PP Mono is a single layer, compact, smooth polypropylene system for sewage infrastructure complying with EN 1852-1. Together with the Institute of Metal Science, Equipment and Technologies - Bulgarian Academy of Sciences and the Institute of Welding, Pipelife held test and happy to announce that the pipes PP Mono can be reliably butt welded! 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 Customers Find here information about our products. For Designers Find here information espacially for designers.