In the design of Shaan Jing gas pipeline, in the light of the concrete condition and the overall technical and economic contrast, three ply PE external anti corrosion layer has been adopted.
陕京天然气输气管线设计中，结合管线的具体情况和所进行的全面技术、经济对比，选用了三层PE外防腐层。
In the design of Shaan Jing gas pipeline, in the light of the concrete condition and the overall technical and economic contrast, three ply PE external anti corrosion layer has been adopted.
陕京天然气输气管线设计中，结合管线的具体情况和所进行的全面技术、经济对比，选用了三层PE外防腐层。
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