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| mm Thickness of X80 Plates Production for the Second WesttoEast Natural Gas Transmission Pipeline by Using OHTP |
| NIE Wenjin,WANG Zhifu,LI Ran,LI Yucang,ZHANG Xiaobing |
| Jiangsu Shagang Group, Zhangjiagang 215625, Jiangsu, China |
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Abstract According to the technical requirements of X80 heavy thickness plates for the second westtoeast natural gas transmission pipeline project and the capability of steelmaking and plate mill of Shagang, a HTP chemical design of low carbon and high niobium was adopted and the OHTP of control rolling and cooling for plates was developed. A mass production of 22 mm thickness of X80 plate and manufacturing of LSAW JCOE pipes of 22 mm×1219 mm were carried out. The results show that the mechanical properties, DWTT properties at -15 ℃ of plates and the yield/tensile ratio of the pipes were significantly improved by comparing that of HTP X80 plates. The absorb energy of Charpy Vnotch impact test at -80 ℃ remains at its top platform above 270 J, the 50% FATT is below -100 ℃. At -30 ℃, the DWTT fracture shear area is 90％, and 85％ DWTT value is at -34 ℃.
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Received: 01 January 1900
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| [5] |
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| [6] |
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2009, Vol. 44 
