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南京水利科学研究院为胜利油田设计了一条水泥管的污水管线。管壁分为两层,外层为耐海水腐蚀的混凝土,内层为7毫米厚的 AS 特种水泥沙浆。AS 水泥制品除具有更好的耐酸碱盐腐蚀性能外,还有早凝、高强的特点。两层的水泥管采用离心法先后同时浇制,凝结为一体。该管线的技术要求是工作压力0.7MPa,竣工试验压力1.(?)MPa,环境温度0～70℃,耐油的橡胶圈柔性接头。管径 Dg400的水泥管每公里总承包造价为30万元(市场价计算)。
Nanjing Institute of Hydraulic Research for the Shengli Oilfield designed a cement pipe sewage pipeline. The wall is divided into two layers, the outer layer of seawater corrosion-resistant concrete, the inner layer of 7 mm thick AS special cement mortar. AS cement products in addition to better acid and alkali corrosion resistance, there are early coagulation, high strength characteristics. Two-story cement pipe by centrifugal method at the same time pouring, condensation as one. The technical requirements of the pipeline is working pressure 0.7MPa, the completion of the test pressure 1 (?) MPa, ambient temperature 0 ~ 70 ℃, flexible rubber ring flexible joints. Dg400 diameter cement pipe per kilometer of the total contract cost of 300000 yuan (market price calculation).