Natural gas is one of the foremost high quality and sanitary energy sources. Gas transmission pipeline network is the artery connecting natural gas resource and market.
天然气是当今世界最重要的优质清洁能源之一，输气管网是连接天然气资源与市场的动脉。
The technical condition of steel used in high-pressure natural gas transmission pipeline and the productive technique and feature of the welded pipe used in the pipeline is discussed.
对国外高压输送天然气管线用钢的技术条件，管线用焊管的生产工艺和生产特点作了论述。
The buried steel pipeline is the main transmission carrier of oil and natural gas, but the corrosion of pipelines has created the serious economic loss for the oil-gas field and the country.
埋地钢质管道是石油与天然气的主要传输载体，但是管道的腐蚀给油气田和国家造成了严重的经济损失。
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