目前对城市埋地管道的防腐采用外防腐层加阴极保护的方法。
Present corrosion protection method for urban buried pipeline is commonly adopting external corrosion protection combined with cathodic protection.
论述了城镇埋地燃气管道外防腐层的综合检测方法与分级评价方法。
The comprehensive detection method and the classification evaluation method for external anticorrosion coating of municipal buried gas pipeline are discussed.
埋地管道开挖是为了验证外防腐层检测结果的准确性，是对各种间接检测工具的最好评价。
Excavating is to confirm the result of detection to buried pipeline coating, and to evaluate the tools of each kind of indirect detection.
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.
老区块气田集输管网使用年限长，管道外防腐蚀层破损严重，普遍存在腐蚀现象。
The gathering pipeline network of old block gas field have been running for a long time.
埋地钢管的外防腐可采用沥青防腐层、煤焦油瓷漆防腐层、聚乙烯胶粘带防腐层、熔结环氧粉末防腐层、二层结构聚乙烯防腐层、三层结构聚烯烃防腐层等技术。
Asphalt, coal tar enamel, fusion-bonded epoxy, polyethylene tape, 2-layer PE and 3-layer PE coatings may be used for corrosion control of underground pipelines.
埋地钢管的外防腐可采用沥青防腐层、煤焦油瓷漆防腐层、聚乙烯胶粘带防腐层、熔结环氧粉末防腐层、二层结构聚乙烯防腐层、三层结构聚烯烃防腐层等技术。
Asphalt, coal tar enamel, fusion-bonded epoxy, polyethylene tape, 2-layer PE and 3-layer PE coatings may be used for corrosion control of underground pipelines.
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