Polypropylene sewage pipes of the Standard series are intended for use in regular housing sewage systems with the regular drainage temperature under 80°С and short-term (under 1 min) periods under 95°С. The pipes can be used for chemically aggressive drainage with pH levels between 2 (acidic) and 12 (alkaline). Polypropylene sewage pipes are extruded from propylene homopolymer. Spigot-socket joint. Double-lipped sealing made of soft styrene-butadiene rubber with plastic spacing ring.