It introduces characteristic and kinds of line pipe for petroleum and natural gas transmission.

简要介绍了石油天然气输送用管线钢管的种类及其特点.

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Line pipe pipe steel plays the important role in safe and economy oil and gas transmitting.

为了实现安全、经济的输送,管线钢钢管起到重要的作用.

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It is suitable fo r electric industry, refrigerant or line , pipe sealing etc.

防潮、隔湿等特性,适用于电子工业 、 冰箱行业、冷气管包扎及管道密封等.

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The development of line pipe steel in Baosteel during the past 15 years is reviewed.

回顾了过去15年间宝钢管线钢的发展.

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The main trunk line pipe valves general requirements of 30 and above life.

一般主干线管道阀门使用寿命要求30年以上.

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