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提出了选择有效的管道覆盖层材料的标准,安全问题、费用及管道的运行环境和温度是必须考虑的,而选择的补口覆盖层材料必须与管道主体材料相同甚至更好,并且二者有良好的相容性。指出了管道表面预处理是最重要的一步,热涂型覆盖层绝不能用于低温管道。无论在工厂或现场涂敷覆盖层都应考虑到气候条件。分析了现场涂敷和工厂涂敷方法的优缺点及阴极保护和涂敷后管道在运输过程中应注意的问题。
The criteria, safety issues, costs, operating environment and temperature of the pipeline must be taken into account in choosing an effective material for the pipeline covering, and the material of the covering must be the same or better than that of the main body of the pipeline Good compatibility. Pointed out that the pipe surface pretreatment is the most important step, heat-coated cover must not be used for low temperature pipe. Climatic conditions should be taken into account whether the coating is applied at the factory or on site. The advantages and disadvantages of on-site coating and factory coating methods as well as the problems that should be paid attention to when cathodic protection and coated pipes are transported are analyzed.