HomeTechnical ArticlesPressure Resistance and Long-Term Reliability of PVC-U Drinking Water Pipes ——Stress Analysis and Life Prediction Based on GB/T 10002.1 Standard
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Pressure Resistance and Long-Term Reliability of PVC-U Drinking Water Pipes ——Stress Analysis and Life Prediction Based on GB/T 10002.1 Standard
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Post by by 孙飞虎
1. Research Background
PVC-U (Unplasticized Polyvinyl Chloride)pipes are ideal fordrinking water supplydue to theirhigh strength, corrosion resistance, and no plasticizer migration(Figure 1). However, inhigh-pressure scenarios(high-rises, long-distance 输水):
50-year hydrostatic strength compliance is only78%(GB/T 6111-2018)- 爆裂 rate of dn200mm pipes is0.6 times/100km·year(domestic water company data)
2. Core Issue: Pressure Failure Mechanism
2.1 Failure Stages
Throughfull-scale burst testingandcreep testing, failures occur in three stages:
Elastic stage(0-10 years): Strain <2%, linear stress-strain
ConclusionThis paper establishes a pressure reliability system throughmaterial reinforcement + structural design + life prediction. As a professional supplier, we provide:✅ High-pressure PVC-U pipes (PN1.0-PN2.5)✅ Pipe stress analysis and life assessment✅ Third-party pressure testing reports
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