Polypropylene is one of the most modern and widely used polymer materials, mass use was mastered in the 1950s. Due to its properties it is the best solution for internal sewage systems. Resistant to mechanical influences - has a high impact strength. Increased heat resistance allows you to withstand both high (for short periods up to 100 ° C) and low (up to -40 ° C) temperatures. Allows full freezing. Also polypropylene has a high chemical resistance to acids and alkalis.