1. Zheng L, Gao S. Research and development of X70 coils for large diameter pipes of west-east gas pipeline project. J Iron Steel Res Int. 2006;18(3):46.
2. Chen QJ, Kang YL, Sun H, Yu H. Static-recrystallization behavior of hot deformation austenite in X70 pipeline steel. J Univ Sci Technol B. 2007;29(12):1212.
3. Zhang HM, Wang HB, Liu ZY, Liu XH, Wang GD. Study on the grain refinement mechanism of low carbon microalloyed steels for pipeline alllicatios. Trans Mater Heat Treat. 2006;27(6):99.
4. Chen YH, Wang Y. Effect of second thermal cycle on the microstructure of the coarse grain heat-affected zone of in-service welded pipeline steel. J Univ Sci Technol B. 2008;30(9):1002.
5. Xue XH, Zhou Y, Qian BN, Li JL, Lou SN. Coarse grain heat affect zone microstructures and toughness of X80 pipeline steel. J Shanghai Jiaotong Univ. 2003;37(12):1854.