一些环境条件，如腐蚀性 土壤、不同材料的使用和杂散电气 电流会导致金属水管腐蚀。 据记录，一旦发生这种腐蚀 在安装金属总水管五年后。这个 作者探索了世界各地的各种公用事业方式 试图保护他们的球墨铸铁水管免受 泄漏和破裂。保护方法包括涂层， 包裹，或某种形式的阴极保护。在期间 在研究过程中，作者们了解到 给定保护方法的成功或失败通常 取决于特定的环境。他们学会了 腐蚀工程师、公用设施和管道制造商 对哪种方法有不同的看法 提供最大的保护。因为 水行业专业人士报告的经验， 作者建议进行一项全面的研究 可在各种条件下进行，以帮助确定 哪种保护方法对球墨铸铁最有效 特定环境的管道。包括55个参考文献、表格和图表。

Several environmental conditions, such as aggressive soil, use of dissimilar materials, and stray electrical currents, can cause metal water mains to corrode. This corrosion has been documented to occur as soon as five years after a metal water main has been installed. The authors explore various ways utilities around the world attempt to protect their ductile-iron water mains from leaks and breaks. Protective methods include coating, wrapping, or some form of cathodic protection. During the course of their research, the authors learned that the success or failure of a given protective method often depended on a specific set of circumstances. They learned that corrosion engineers, utilities, and pipe manufacturers have distinctive schools of thought about which method provides the most protection. Because of the variety of experiences reported by professionals in the water industry, the authors recommend that a comprehensive study be performed under a variety of conditions to help determine which protective method works best with ductile-iron pipe for a specific environment. Includes 55 references, tables, figures.