天然气地下管道用涂层品种、性能及选用设想

Coatings for use on the underground pipe line for transporting the natural gas,its performance and selection

从影响管道腐蚀破坏的因素谈起 ,介绍天然气地下管道内外壁涂料的品种特性 ;外壁涂层主要有石油沥青、煤焦油磁漆、融熔环氧 (FBE)、聚烯烃胶带、挤出聚乙烯和环氧煤焦沥青等。选用时应从外界环境、维修要求、实际质量、费用等方面综合考虑。

Factors which may bring about corrosion are discussed.This paper tells us that on the outer layer of the pipe,asphalt or coal tar pitch coatings and other types of coatings are commonly used.The deciding factors for selection are:outside environment,requirement of maintenance,quality and cost.