南京市江心洲污水处理厂厂内管道及出厂管道大部分采用钢管，管径５００～２２００ｍｍ不等。内防腐就是用隔绝材料把钢管从管内与腐蚀介质隔绝，阻止二者形成腐蚀电池。该厂钢管内防腐选用聚醋酸乙烯水泥砂浆，它具有防腐效果好、价格低、无毒、施工易行等优点，施工方法... Most of the pipelines and factory pipes of the Jiangxinzhou Sewage Treatment Plant in Nanjing use steel pipes, ranging from 500 to 2200 mm in diameter. Internal anti-corrosion is to isolate the steel pipe from the corrosive medium by the insulating material and prevent the two from forming a corrosive battery. The factory pipe anti-corrosion selection of polyvinyl acetate cement mortar, it has a good anti-corrosion effect, low price, non-toxic, easy construction and other advantages, construction methods...