Title: Evaluation of the Long-Term Hydrostatic Pressure Resistance of PPR and PVC Pipes
Authors: Muhab Hassanien S. S ,Yousif.A A,Ebtihal.Alameen,Nusaiba.Hassan
Volume: 9
Issue: 11
Pages: 52-60
Publication Date: 2025/11/28
Abstract:
industrial applications, evaluating long-term performance under sustained pressure has become essential. This study aims to assess and compare the long-term hydrostatic pressure resistance of Polypropylene Random Copolymer (PPR) and Polyvinyl Chloride (PVC) pipes at various temperatures. Stress Rupture Testing was conducted according to standard procedures, where pipe specimens were exposed to constant internal pressure at 30°C, 35°C, and 40°C. The hoop stress (S) was determined using the relation =(P(D-t))/2t . Results showed that PPR pipes exhibit superior hydrostatic pressure resistance compared to PVC under identical conditions, confirming their suitability for water supply systems. Additionally, the inclusion of recycled material was found to reduce the long-term lifespan of both materials. These findings contribute to estimating the Hydrostatic Design Basis (HDB) and enhancing the reliability of thermoplastic pipe applicationKeywords: PPR Pipes, PVC Pipes, Hydrostatic Pressure Test, Stress Rupture, Hoop Stress, Long-Term Lifespan.