The pipeline steel is mainly used in transmission pipe of oil and natural gas.

管线钢主要用于石油和天然气的输送。

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This paper systematically summarizes the basic design idea aiming at developing the pipeline steel with better comprehensive properties.

系统总结了管线钢合金设计的基本思想，力求为研制综合性能更佳的管线钢指明方向。

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The pipeline steel was updated from X70 to X80 through TMCP technique, and its mechanical properties and fracture separation of rolled plate were studied.

利用TMCP技术实现了管线钢x 70级向X80级的升级，并研究了板材的力学性能及断口分离现象。

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Seeking to grow its energy base, Thailand has recently ordered the steel to build a third major gas pipeline, which in time would trigger development of 2 trillion cubic feet of undeveloped Unocal reserves.

FORBES: It's All About Azerbaijan

Plains Justice, a northern plains states public interest group, pointed out the first Keystone XL pipeline, which open last summer, was built with substandard steel from India.

FORBES: Group Aims to Halt Canada-Texas Tar Sands Pipeline

Sirius proposes to process the ore at a site at Wilton, near Middlesbrough, and plans to transport it via a steel pipeline buried a minimum of 3ft 11in (1.2 m) below ground.

BBC: Sirius propose North Yorks pipeline to transport potash