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Articles

Assessment of the advisability of the use of steel pipes X70 and X80 for strategic pipelines of large diameters with respect to their weldability

Pages 953-956 | Published online: 11 Mar 2013
 

Abstract

Steels applied for construction of oil and gas pipelines are analysed; examples of X70 and X80 steel pipelines are given. The mechanical properties and weldability of X70 and X80 steel as well as principles of quality inspection of pipelines performed at a building site are described. On the grounds of the literature survey and the author's own experience, both shortcomings and advantages of application of advanced high-yield-strength steels, for instance X80 steel, for construction of high-pressure pipelines are presented.

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