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Production of Grade X80 High Strain Linepipes for Seismic Region Application

[+] Author Affiliations
Ryuji Muraoka, Joe Kondo

JFE Steel Corporation, Fukuyama, Japan

Lingkang Ji

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

Hongyuan Chen, Yaorong Feng

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

Nobuyuki Ishikawa, Mitsuhiro Okatsu

JFE Steel Corporation, Kurashiki, Japan

Satoshi Igi

JFE Steel Corporation, Chiba, Japan

Nobuhisa Suzuki

JFE Steel Corporation, Kawasaki, Japan

Katsumi Masamura

JFE Steel Corporation, Tokyo, Japan

Paper No. IPC2010-31556, pp. 287-292; 6 pages
  • 2010 8th International Pipeline Conference
  • 2010 8th International Pipeline Conference, Volume 4
  • Calgary, Alberta, Canada, September 27–October 1, 2010
  • Conference Sponsors: International Petroleum Technology Institute and the Pipeline Division
  • ISBN: 978-0-7918-4423-6 | eISBN: 978-0-7918-3885-3
  • Copyright © 2010 by ASME


In order to achieve safety and reliability of long-distance gas transmission pipeline installed in seismic region while obtaining economical benefit by reducing material and construction cost, it is essential to apply the high-strength linepipes with sufficient strain capacity against buckling and weld fracture by seismic ground movement. At the same time, it is quite important to develop appropriate material requirement for strain capacity depending on the pipe dimension and strain demand of the region where the pipeline is installed. Grade X80 heavy gauge linepipes with excellent deformability were mass produced by applying advanced plate manufacturing technologies. These linepipes exhibit low Y/T and high uniform elongation in the longitudinal direction even after pipe coating. Strain capacity of the pipe against bending deformation with internal pressure was verified by conducting full scale pipe bending testing. In this paper, production results of high strain X80 linepipes for the application in long-distance pipelines in seismic region and full scale pipe bending and hydraulic burst test results were introduced.

Copyright © 2010 by ASME



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