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    Present Development Situation of Digitalized Pre-welding/Finish Welding Technology and Equipment for Steel Pipe
    YANG Zhanli, ZHANG Shanbao, LIU Chengkun, TANG Qilong, WANG Yongjiang, BAI Debin, FU Ao
    2021, 50(2): 1-6. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.01.06
    Abstract PDF
    Present Development Situation and Expectation of Oil Pipe Thread Auto-measurement Technology
    PAN Cunqiang, CHEN Lin, WAN Jia, WANG Xu
    2021, 50(2): 7-11. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.07.11
    Abstract PDF
    Progress of Research on Surface Oxidation Phenomenon of Seamless Steel Tube Piercing Plug
    ZHANG Jiahui, TIAN Qingchao, ZHAO Yan, HONG Jie, LU Xiaogang
    2021, 50(2): 12-18. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.12.18
    Abstract PDF
    Trial Production of GH1059 Alloy Guide Tube for Control-rod Drive Mechanism of Sodium-cooled Fast Reactor
    GAO Pei
    2021, 50(2): 19-23. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.19.23
    Abstract PDF
    Effect by Solution Treatment on Structure and Properties of S32168 Stainless Steel Pipe
    QIN Xingwen, YANG Weiliang, WANG Kun, PAN Jianliang, FEI Qianping
    2021, 50(2): 24-29. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.24.29
    Abstract PDF
    Research on Thermal Deformation Behavior of Pipeline Steel with Ferrite/Pearlite Banded Structure
    LIU Yujiang, WANG Shasha, JIA Han, JIN Yunlu, LI Jingyi
    2021, 50(2): 30-33. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.30.33
    Abstract PDF
    Development of CB140V Casing for Service in High-strength Shale Gas Well
    LIU Guanghua, CHEN Songlin, SU Zhengqing
    2021, 50(2): 34-37. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.34.37
    Abstract PDF
    Research and Development of High-performance SEW Q125 Casing for Service in Shale Gas Well
    BI Zongyue, LI Yuanzheng, HE Shilei, YUAN Qingying, LI Zhoubo, TANG Jiarui, GAO Mengzhao
    2021, 50(2): 38-41. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.38.41
    Abstract PDF
    Design and Development of 238 mm Pass ofΦ180 mm PQF Mill
    WANG Fangbo, LIU Qizeng, LI Fei, LIU Jun
    2021, 50(2): 42-45. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.42.45
    Abstract PDF
    Optimized Design Method for Three-roller Steadier for CTP
    XIAO Wei, LIU Lin, DONG Haibo
    2021, 50(2): 46-50. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.46.50
    Abstract PDF
    Method for Adjusting Rolling Force Curve and Analysis of Failure Curve of 3-roll Mandrel Mill
    KAO Ran, GAO Heping, LIN Zhen, WEN Bo, DUAN Guoqing
    2021, 50(2): 51-54. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.51.54
    Abstract PDF
    Comparative Research on Roll Stand Changeover Types of 3-roll Mandrel Mill
    ZHOU Chaoqun, MU Dong, WANG Jianhui, OUYANG Jian, QIN Xuan
    2021, 50(2): 55-58. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.55.58
    Abstract PDF
    Design of Grinding Machine for Grinding Full Outer Weld of Spiral SAW Pipe
    ZHU He, TIAN Yanping, WANG Shuxiang, WANG Tiemin, LI Jiping
    2021, 50(2): 59-62. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.59.62
    Abstract PDF
    Analysis of Causes for Fracture of Specimen for Side-bend Test to Drill Pipe Weld
    YU Shijie, XU Changxue, CHEN Meng, OUYANG Zhiying
    2021, 50(2): 63-67. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.63.67
    Abstract PDF
    R & D of Monitoring and Information Storage & Analysis System for Hydrostatic Testing
    CHEN Liang
    2021, 50(2): 68-73. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.68.73
    Abstract PDF
    Accurate Determination of Element Boron in Linepipe Serving under Acidic and Offshore Conditions
    JIN Boying, LONG Hui
    2021, 50(2): 74-78. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.74.78
    Abstract PDF
    Analysis of Detection of Weld crack and Non-penetration Welding of HSAW Steel Pipe
    MA Zhaohui, YANG Liang, DUAN Sumei, WANG Gang
    2021, 50(2): 79-83. DOI: 10.19938/j.steelpipe.1001-2311.2021.2.79.83
    Abstract PDF