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Deformation Behavior Prediction of X80 Steel Line Pipe and Implication on High Strain Pipe Specification

[+] Author Affiliations
Hongyuan Chen

Xi’an Jiaotong University; Tubular Goods Research Center-CNPC, Xi’an, Shaanxi, China

Lingkang Ji, Shaotao Gong

Tubular Goods Research Center-CNPC, Xi’an, Shaanxi, China

Huilin Gao

Xi’an Shiyou University, Xi’an, Shaanxi, China

Paper No. IPC2008-64575, pp. 763-768; 6 pages
  • 2008 7th International Pipeline Conference
  • 2008 7th International Pipeline Conference, Volume 3
  • Calgary, Alberta, Canada, September 29–October 3, 2008
  • Conference Sponsors: International Petroleum Technology Institute and the Pipeline Division
  • ISBN: 978-0-7918-4859-3 | eISBN: 798-0-7918-3835-8
  • Copyright © 2008 by ASME


The use of strain based design in pipeline technology has been widely discussed during the last decade for pipelines in harsh environment. In such cases pipelines should be designed based on strain criterion. Strain based design poses a number of challenges, particularly on pipe size and material properties. This paper presents preliminary studies on prediction of buckling strain and buckling mode for X80 high-strain line pipe by finite element methods based on full-scale test. The effects of several parameters such as internal pressure, material properties pipe size and geometric imperfection, were investigated to predict the critical strain for 48″ diameter line pipe under compression and pure bending with 12MPa internal pressure. Material parameters of a specification for high strain line pipe were analyzed to promote its application in the 2nd West-East pipeline of China National Petroleum Corporation.

Copyright © 2008 by ASME
Topics: Deformation , Steel , Pipes



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