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Development And Mechanical Properties of X120 Linepipe

26

Citations

0

References

2004

Year

Shuji Okaguchi, Hiroyuki Makino, Masaya Hamada, Akio Yamamoto, Tomonori Ikeda, Izumi Takeuchi, D.P. Fairchild, M.L. Macia, S.D. Papka, John H. Stevens,

Unknown Venue

Abstract

To enable the development of remote gas sources, X120 grade UOE linepipe has been developed. Low carbon- low Pcm and Mn-Ni-Mo-Nb-V-B bearing steel with a microstructure of fine ausformed martensite and bainite has excellent combinations of strength and toughness. With respect to longitudinal seam welding, the X120 pipe exhibits good HAZ cracking resistance due to a low Pcm. Deformation behaviors of the X120 linepipe were investigated using field bending and hydrostatic burst tests. The results verify that the over-matched seam weld in the X120 is sufficient to enable burst strength consistent with this grade of pipe. Sufficient deformability of the X120 for field bending was demonstrated using existing pipeline construction equipment.