1. The Comparison and Application of the Cast-iron Drainpipes with the Flexible Adapting Joint and Flexible Coupling Joint Grayioc tubing joint
    承插式柔性接口和卡箍式柔性接口铸铁排水管对比及应用格雷依沃克型油管接箍

2. High-pressure gunite technique for drainpipes sealing
    用高喷灌浆技术围封加固压力排水管道

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3. Application of plastic drainpipes in public works
    塑料排水管在市政工程中的选材应用研究

4. The paper introduces hydrological conditions of Qiantang River and the structure of the terminal drainpipes of Sibao Sewage Treatment Plant, Hangzhou. The operation and silting mechanisms of the terminal drainpipes are also analyzed.
    介绍了钱塘江的水文条件和杭州四堡污水处理厂江心排放管的构造，对江心排放系统的运行情况及淤积机制进行了分析。

5. Analysis on the Silting Mechanisms of the Terminal Drainpipes of Sibao Sewage Treatment Plant
    四堡污水处理厂江心排放管的淤积机制分析

6. The methods and the problems of application of hard PVC drainpipes in practical constructions are discussed, and the methods to resolve the probles are put forward.
    探讨硬聚氯乙烯排水管在实际工程中的应用及存在问题，并提出解决办法。

7. Hen the floorslabs of lavatories are constructed in the prefabricating factory, the drainpipes may be put into the reinforced concrete floorslabs to solve the leakage problems.
    厕所卫生间楼板在预制工厂加工，将排水支管直接浇入钢筋砼楼板中，解决了渗漏的问题。