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随着市政建设的不断发展,对管道的施工技术和施工质量也提出了越来越高的要求,对于埋地钢管的外防腐方面,目前我们已淘汰了石油沥青外防腐,统一采用环氧煤沥青防腐。采用环氧煤沥青防腐的优点是:
With the continuous development of municipal construction, higher and higher requirements have been put forward for the construction technology and construction quality of pipelines. For the external corrosion of buried steel pipes, we have eliminated the external corrosion protection of petroleum asphalt and adopted coal oxide coal uniformly. Asphalt corrosion protection. The advantages of using epoxy coal pitch for corrosion protection are: