Over the last 20 years, traditional metal pipes have gradually been replaced by plastic pipes. PP Random Copolymer (PP-R), this change was triggered due to low price, hygiene, long-term durability and environmental friendliness of plastic materials. The enhancement of pressure resistance and long-term thermal resistance triggered by the improvement of plastic materials and processing technologies also stimulated the broader use of plastic products. Above all, the demand for PP-R pipes has been rapidly rising in many markets, such as Middle East and China, as well as Europe, where was the origin of PP-R pipes.
