管道输气工艺主要是根据气源条件及天然气组分，确定输气方式、流程和运行方案，现代天然气管道输送则普遍采用压气机提供压力能，对所输送的天然气的质量也有严格的要求。
介绍了靖边至西安输气管道的概况，对管道的主要环境因素和工艺站场环境因素进行了分析。
The article covers the general situation of Jingbian-Xi'an Natural Gas Transmission Pipeline and analysis is conducted on pipelines's major environment factors and that o! process plants.
主要介绍了手工下向焊工艺及操作技术在焊工培训过程和天然气输气管道施工现场的应用。
This article mainly introduces the application of vertical down welds technique and operation technology in the course of welders' training and in the site of natural gas pipeline.
输气管道站场各种工艺管道常用的机械连接方式是法兰连接。法兰连接是由一组法兰、螺栓、螺母和垫片所构成的连接系统。
In long - distance gas pipelines, the normal mechanical connection of process pipelines is flange connection, which consists of flange, bolts, nuts and gaskets.
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