PP Non-Pressure Sewer & Drainage
Application: External gravity sewer networks and stormwater drainage systems.
Standard: EN 13476-3 (Structured-wall Type B).
Material: Polypropylene (PP).
Typical Ring Stiffness Classes: SN8 / SN10 / SN16.
These systems are designed for underground installation where structural load resistance, joint tightness and long-term dimensional stability are critical. Production is supported by Factory Production Control (FPC/ZKP) and initial type testing.






