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大连市引碧入连三期南段供水工程主干地下输水管道从洼子店水库至开发区湾里，全长４３．７０ｋｍ，管道于１９９６年３月开工，直埋式铺设，同年１０月竣工，总投资近２亿元人民币。管材为碳钢，管径２０５４ｍｍ，壁厚１６ｍｍ，外壁涂敷环氧煤沥青涂层，内壁采用水泥砂浆衬
The main underground water supply pipeline of the water supply project of the Bilian-Lianhe Phase III of Dalian City was from Zhuzidian Reservoir to Wanli Development Zone. The total length was 43.70km. The pipeline was started in March 1996, and it was laid directly. In October of the same year Completed construction, with a total investment of nearly 200 million yuan. The tube is made of carbon steel with a diameter of 2054mm and a wall thickness of 16mm. The outer wall is coated with epoxy coal tar coating and the inner wall is made of cement mortar.