本文描述了美国、韩国和澳大利亚制造的镀锌管镀锌层的差异。锌的厚度和成品随管道类型的不同而不同。澳大利亚烟斗的涂层最均匀，美国烟斗的涂层最不均匀。在一项正在进行的试点研究中，这些管道暴露在含有不同浓度铜的水中，以确定这些管道的表面特征是否与点蚀相关。根据中试结果和观察到的管道表面特征，将对管道表面质量在局部腐蚀中的重要性进行论证。包括6个参考文献、表格、图表。

This paper describes the differences found in zinc coatings of galvanized pipes manufactured in the United States, Korea, and Australia. Zinc thickness and finished varied with the type of pipe. The Australian pipe had the most uniform coat, and the US pipe had the least uniform coat. In an ongoing pilot study, these pipes are being exposed to water containing various concentrations of copper in order to determine whether the surface characteristics of these pipes have any correlation with pitting corrosion. Based on the pilot plant results and on the observed pipe surface characteristics, an argument as to the importance of pipe-surface quality in local corrosion will be made. Includes 6 references, tables, figures.