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结合对陕京输气管道和库鄯输油管道所用管材防腐预制质量驻厂监督的实践，分析了产品质量影响因素，归纳总结了三层ＰＥ（聚乙烯）防腐管道预制生产过程中对产品质量监督的经验。
Combining the practice of supervising the prefabricated quality of pipe materials used in Shaanxi-Beijing gas transmission pipeline and Kuqa oil pipeline, the factors affecting the product quality are analyzed. The supervision of product quality in the prefabrication of three-layer PE (polyethylene) experience of.