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为保证大口径输水管道安全以及饮用水的质量,合理选择管材十分重要,通过综合分析涂塑钢管、PCCP管和DIP管的成本以及防腐形式,说明在大口径输水管道工程中涂塑钢管成本较低且符合饮用水卫生标准,可优先选择徐塑钢管;通过分别比较涂塑钢管常用的几种内防腐涂层和外防腐涂层的性能,总结得到内壁涂装熔结环氧粉末涂料外壁涂装热熔聚乙烯粉末涂料为最佳的防腐工艺组合。因此,内壁熔结环氧粉末涂料外壁热熔聚乙烯粉末涂料的涂塑钢管是大口径输水管道工程中最佳的管材与涂层选择。
In order to ensure the safety of large-diameter water pipelines and the quality of drinking water, it is very important to choose a proper pipe. By comprehensively analyzing the cost of plastic pipe, PCCP pipe and DIP pipe and the anticorrosive forms, it is shown that in the large-diameter water pipe project, Lower cost and meet drinking water hygiene standards, plastic pipe can be preferentially selected; by comparing the performance of several commonly used inner anticorrosive coating and outer anticorrosive coating of plastic coated steel pipe, concluded that the inner wall coating fused epoxy powder coating Outer wall coating hot melt polyethylene powder coating for the best combination of anti-corrosion process. Therefore, the inner wall of fused epoxy powder coating hot-melt polyethylene powder coating of the outer wall of steel pipe is large-diameter water pipe project the best choice of pipe and coating.