DZ-1 small -sized directional drilling newly developed by China Petroleum pipeline Scientific Research Institute provides an advanced method for laying of various pipelines.

由中国石油天然气管道科学研究院最新研制的DZ - 1小型定向钻为各类地下管道的敷设提供了一种先进的方法。

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This paper has expounded the method and characteristics for laying city communication pipeline by the technique of steel truss, which is along the built bridge and striding over river.

本文阐述了采用钢桁架技术解决城市通信管道沿已建桥敷设跨河的方法和特点。

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This method can solve the practical problem of laying large diameter and thin wall pipeline in shallow water.

该方法能够解决浅水大直径薄壁管道的铺设难题。

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