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水泥管道在我国地下输水工程中起着极其重要的作用,它以成本低、强度大、耐久性好、抗老化等优势被社会广泛应用。其缺点是管节短、接头多,接头处理不好极易渗漏。河北工专最新研制成功并通过专家鉴定的 RLY接头材料,弥补了现有接口材料的缺陷。该种接头材料主要以沥青、机油、桐油、松香、环氧树脂及碳酸钙等多种原材料按一定配比,在
Cement pipes play an extremely important role in underground water conveyance projects in China. They are widely used in society due to their advantages of low cost, high strength, good durability and anti-aging. The disadvantage is the short tube joints, connectors and more joints easily dealt with leakage. Hebei Institute of newly developed and passed the expert appraisal of the RLY connector material to make up for the existing interface defects. The joint material mainly asphalt, oil, tung oil, rosin, epoxy resin and calcium carbonate and other raw materials according to a certain ratio, at