ABSTRACT In this study, the corrosion resistance of commonly used plumbing materials was evaluated when three disinfection treatments were applied in hot water distribution systems. In particular copper, brass, stainless steel and galvanised steel were tested in environments containing monochloramine, chlorine dioxide and hydrogen peroxide disinfectants under real field conditions for a long period of time (1 year), in order to evaluate the effect of free corrosion on the metal specimens; chlorinated polyvinylchloride (CPVC) was tested in the same environments in order to evaluate the degradation of the mechanical properties of plastic specimens. The results obtained enabled us to rank the metallic materials corrosion resistance against disinfectants in decreasing order, as follows: stainless steel, copper and copper-based alloys, galvanised steel. CPVC samples proved to be extremely stable in all of the disinfectants investigated, maintaining the same compression behaviour of the pipes aged with untreated water after 12 months of exposure.

中文翻译：

---

暴露于消毒处理的配水系统常用管道材料的耐腐蚀性

摘要 在这项研究中，当在热水分配系统中应用三种消毒处理时，对常用管道材料的耐腐蚀性进行了评估。特别是铜、黄铜、不锈钢和镀锌钢在含有一氯胺、二氧化氯和过氧化氢消毒剂的环境中在实际现场条件下进行了长时间（1 年）的测试，以评估自由腐蚀对金属试样；氯化聚氯乙烯 (CPVC) 在相同的环境中进行了测试，以评估塑料样品机械性能的退化。获得的结果使我们能够将金属材料对消毒剂的耐腐蚀性按降序排列如下：不锈钢、铜和铜基合金、镀锌钢。