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    Present Development Situation of Domestic Seamless Steel Tube-making Industry and Relative Suggestions
    ZHAO Jia, GUAN Zhijie, LI Wenyuan
    2020, 49(2): 1-4.
    Abstract PDF
    Analysis of Production and Operation by Tenaris Group and Vallourec Group in 2019
    WU Lei
    2020, 49(2): 5-8.
    Abstract PDF
    Development of Q620 Hi-strength Hot-rolled Seamless Steel Tube on the Basis of TMCP
    LI Zheng, LIU Yaoheng
    2020, 49(2): 9-13.
    Abstract PDF
    Study on Phase-transformation Kinetics of Acicular Ferrite in Nb Micro-alloyed Pipeline-purposed Steel
    CHEN Yan, ZHANG Zheping, ZHANG Chuanyou, LIU Jiangcheng, ZHANG Guozhu, ZHAO Xingliang, ZHAO Sujuan
    2020, 49(2): 14-18.
    Abstract PDF
    Effect by Cooling Rate on Banded Structure of SA106C Seamless Carbon Steel Boiler Pipe
    RAN Xu, CHEN Shaolin
    2020, 49(2): 19-23.
    Abstract PDF
    Development of Large-sized and Heavy-walled S890 High Strength/Toughness Seamless Steel Tube for Hydraulic Cylinder Service
    WANG Shiming, ZHOU Yong, HUANG Youqi
    2020, 49(2): 24-28.
    Abstract PDF
    Development of New Type 8 MN/3 MN Steel Pipe End Upsetting Machine
    CHENG Sixiang, JIAO Yue, MA Haikuan, LI Peili, GU Ruijie, REN Mingjie, QIN Weichao
    2020, 49(2): 29-32.
    Abstract PDF
    Effect by Cu on Production of S32205 Duplex Stainless Steel Pipe
    WANG Shaobing, ZHU Jianping, GAO Yalong, SUN Wenqiang, ZHOU Zhu, LI Guangheng, QIN Xingwen
    2020, 49(2): 33-36.
    Abstract PDF
    Process Practice of S32750 Hot-rolled Super Duplex Stainless Steel Pipe
    GAO Ruiquan, LV Zhaozhong, LIU Jiayong, CHEN Hongqi
    2020, 49(2): 37-39.
    Abstract PDF
    Hydroelectric Analysis of Alarming and Abnormal Withdrawing of Right-side Main Milling Head of Steel Tube Edge-milling Machine
    XU Gentao, SUN Fenglong, HUANG Jie
    2020, 49(2): 40-44.
    Abstract PDF
    Roll Gap Adjustment of 3-roll PQF Mill
    LU Lifeng, WANG Qingwei
    2020, 49(2): 45-48.
    Abstract PDF
    Analysis of Comprehensive Performance of Home-made 800 Alloy U-shaped Heat-conduction Tube
    CAI Zhigang, ZHANG Yaoyao, YAN Shengzhi, CAO Ping, LUO Xia, WANG Fang, WANG Yongdong
    2020, 49(2): 49-53.
    Abstract PDF
    Application of Radio Frequency Identification Technology to Steel Pipe Manufacture
    MA Zhaohui, WANG Xupeng, XU Haidong, GAO Peng, WANG Donghu, WANG Hengyang
    2020, 49(2): 54-57.
    Abstract PDF
    Research on Factors Affecting Screw-off Torque of Drill Pipe Joint
    LU Xining, DING Jieqiong, CAO Jingjing
    2020, 49(2): 58-62.
    Abstract PDF
    Effect by Ni on Piercing Plug as being Prepared and Operated
    ZHENG Chengming, YUAN Heping, TIAN Qingchao
    2020, 49(2): 63-66.
    Abstract PDF
    Study on Reasons for Fracture of Stretch-reducing Roll and Related Countermeasures
    QU Haixia, GU Tingquan, HAN Jianzeng
    2020, 49(2): 67-71.
    Abstract PDF
    Discussion on 3D Surface Flaw Inspection Method for Hot-rolled Steel Tube
    LIU Xiaonan, LIU Ke, NIE Jianhua, DOU Manli, NIE Bin
    2020, 49(2): 72-75.
    Abstract PDF
    Study on Method for Intelligent Linkage Production Management of Steel-making/Pipe-rolling Processes
    WU Hongjia, LI Yuzhu, DING Lihui
    2020, 49(2): 76-79.
    Abstract PDF
    Process technology for steel tube sizing（reducing）（Ⅰ） —Practical Technology for Hot-rolled Seamless Steel Tube
    CHENG Haitao, LI Chibo, LI Xiao
    2020, 49(2): 80-83.
    Abstract PDF