Abstract：The mechanical properties, microstructure, precipitates X80 pipeline steel and SSAW pipes were investigated. The average yield strength and tensile strength of X80 were 575 MPa and 660 MPa, the average impact energy was 295 J at 20 ℃,the DWTT average shear area was 98% at 15 ℃.X80 has acicular microstructure, fine grains and dispersed precipitates. The strength of SSAW pipes can meet the requirements for second WestEast Gas Transmission project.
施雄樑;张建平;钱海帆;朱涛;江海涛. 马钢2250热连轧生产厚壁X80管线钢[J]. 钢铁, 2008, 43(8): 61-0.
SHI Xiongliang;ZHANG Jianping;QIAN Haifan;ZHU Tao;JIANG Haitao. Production of X80 Pipeline Steel Strips on 2250 Hot Mill in Masteel. Iron and Steel, 2008, 43(8): 61-0.
2008, Vol. 43 
