简要介绍了石油天然气输送用管线钢管的种类及其特点。
It introduces characteristic and kinds of line pipe for petroleum and natural gas transmission.
对油田原油输送管线内的腐蚀情况、沉积物种类及其危害进行了综述。
The corrosion condition, the species and the harm of the deposit of the petroleum pipelines inner in oil fields were briefly introduced.
介绍了中国石化北京燕化石油化工股份有限公司地下管线的种类，分析了地下管网现状。
This paper introduced the type of underground piping in Beijing Yanshan Petrochemical Co. , Ltd. , and analyzed the present situation of the underground piping network.
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