The corrosion of buried steel gas pipeline in sleeves such as cement sleeve, cast iron sleeve, external anti-corrosive steel sleeve is analyzed, and the local cathodic protection method using ribbon magnesium ( zinc) anode and ring anode is discussed. 分析了埋地钢质燃气管道在水泥套管、铸铁套管、做外防腐的钢套管内的腐蚀情况,讨论了采用带状镁(锌)阳极、镯状阳极的局部阴极保护方法。
However, the ribbon sacrificial anode such as ribbon Magnesium anode and ribbon Zinc anode can extend the application up to hundreds m. 为此人们开发了带状牺牲阳极,目前常用的有带状镁阳极和带状锌阳极,可把应用领域扩大到数百Ωm。
In China, the early stage developed ribbon anode is Magnesium anode but its application is limited due to its low efficiency and short life. 国内早期开发出来的带状阳极是镁阳极,由于镁阳极的效率低、寿命短,使其使用受到限制。