对城市供热系统中碳钢管腐蚀失效进行了分析.结果 显示，在热水中的溶解氧、Cl-等作用下焊缝发生强烈的局部腐蚀，造成钢管穿孔；分析 了钢管腐蚀的原因和机理.
Corrosion cases of carbon steel pipe for hot water s upply are analyzed, it is shown that serious localized corrosion occured on weld ed seam which caused by O and Cl- in the hot water, and then which results in pertoration of the pipe rapidly.
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