Traditional coatings have many defects in the application of pipeline internal corrosion protection and the problem of inner joint wrap has not been solved till now.
传统涂料在管道内防腐的应用上存在着许多缺陷，而且内补口问题始终没得到解决。
The two special cement coatings are applicable to sewage pipeline internal corrosion for ductile iron pipe, improve the ability to resist the erosion of acid components in sewage.
这两种特殊水泥涂层均适用于污水管道用球墨铸铁管的内防腐，提高抵抗污水中酸碱成分的侵蚀能力。
When corrosion mechanism was studied for internal corrosion of gas pipeline, internal corrosion degree of pipeline should be evaluated.
当研究天然气管道内腐蚀机理时，有必要对管道进行内腐蚀程度的评价。
In this paper, Fuzzy comprehensive evaluation method was used to evaluate internal corrosion degree of gas pipeline and field examples were used to verify the feasibility of it.
本文提出了利用模糊综合评价方法对天然气管道内腐蚀程度进行综合评价的具体方法，并通过应用示例验证该评价方法的可行性。
By statistically analysing those accidents of gas trunk line at Sichuan OaS Field, the paper concludes that the internal corrosion is the main reason in pipeline accidents.
本文通过对四川气田输气干线事故的统计分析，说明了内腐蚀是管道事故发生的主要原因。
The formation of impurity in the pipeline, the internal corrosion mechanism as well as the harm of the internal corrosion to the pipeline operation was introduced.
介绍了成品油管道内杂质形成情况、管道内腐蚀机理及对管道运行的危害。
The reason why corrosion was seen on the Alaska Pipeline; internal inspection should be strengthened to avoid corrosion pitting.
阐述了阿拉斯加管道腐蚀产生的原因，提出了为避免管道因腐蚀而穿孔，应加强管道内检测的措施；
Internal corrosion control technology in pipeline includes gravity drop method to measure corrosion speed and pour into anti-corrosion doze.
输气管道内腐蚀控制技术包括采用失重挂片法测量管道内腐蚀速度和加注缓蚀剂等。
This coating technology can improve pipeline operation efficiency, reduce costs and prolong pipeline service life, so it is suitable for the internal corrosion control of short distance pipelines.
这种方法可提高管道输送效率、降低成本、延长管道使用寿命，比较适合于短距离的管道内防腐。
Corresponding measures to improve internal corrosion prevention of natural gas pipeline are presented based on the analytical results.
根据分析得到的结果提出了相应的改进天然气管线防腐方法及措施。
Internal coating used in high pressure, large diameter and long distance gas pipeline has two main functions, one of them is anti corrosion and the other is drag reduction.
高压、大口径、长输天然气管道采用内涂层主要具有两大功能，一是防腐蚀，二是减阻。
Internal coating used in high pressure, large diameter and long distance gas pipeline has two main functions, one of them is anti corrosion and the other is drag reduction.
高压、大口径、长输天然气管道采用内涂层主要具有两大功能，一是防腐蚀，二是减阻。
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