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    Summary of Steel Tube Import and Export Status of China over Years
    ZHONG Xidi, LI Xia, GAO Ruiquan, ZHAO Yong
    2023, 52(4): 1-4. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.01.04
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    Present Situation Analysis and Prospect of Auto-serviced Precision Steel Tube
    LI Dianjie, HAO Xiaodong, LI Jiang
    2023, 52(4): 5-9. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.05.09
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    Research on Cold-expanding Deformation Process of Iron-nickel-based Alloy UNS N08810 Seamless Steel Pipe
    LI Yi, TUO Leifeng, GUO Jianbang, YANG Fan, FAN Hua, CHU Zhibing
    2023, 52(4): 10-15. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.10.15
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    Study on Influence by Microstructure Change of Seamless Steel Pipe on Its Hardenability
    LI Dongyuan, WU Guanghui, ZHOU Zhengping, ZHOU Yong, SONG Shupeng, WU Run
    2023, 52(4): 16-20. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.16.20
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    Study on External Collapse-resistance of Φ114.3 mm×8.56 mm 140V Oil Casing
    XU Leiming, GAO Lianxin, DAI Hanyang, ZHANG Heng
    2023, 52(4): 21-25. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.21.25
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    R & D of SAWH Steel Pipe with Ultra Large SDR
    ZHANG Chenpeng, HU Tao, WANG Tianfa, RUAN Xiran, ZHOU Shuliang, LI Jianyi
    2023, 52(4): 26-29. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.26.29
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    Development and Research of a New Austenite Heat-resistant SP2215 Steel
    WU Minghua, YANG Hui, ZHU Qiuhua, CHEN Genbao, SONG Jianxin, GAO Yibin, WANG Jianyong, DING Binhua
    2023, 52(4): 30-35. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.30.35
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    A Torque Feedback-based Method for Self-adaptive Adjustment of Crop End Control Triggering Time of Stretch Reducing Mill
    GONG Qiang
    2023, 52(4): 36-40. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.36.40
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    Influence by White Band in Cr-Mn-Mo Low Alloy Steel on Mechanical Properties
    PENG Yang, JIN Boying, JIANG Genfeng, ZHAO Jianming
    2023, 52(4): 41-45. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.41.45
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    Analysis of Defects of High Strength/High Toughness 40CrMnMo Seamless Steel Pipe and Study on Relevant Countermeasures
    WANG Jinyong, CAO Hongbo, ZU Xinghua, CHEN Xinhe, WANG Kun, CHEN Hui, ZUO Jingjing
    2023, 52(4): 46-49. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.46.49
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    Cause Analysis of Transversal Crack of BG27CrMoV Geological Drill Pipe
    MA Yannan, SUN Wen
    2023, 52(4): 50-53. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.50.53
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    Design and Development of 345 mm Pass of Φ460 mm PQF Mandrel Pipe Mill
    ZHANG Lizhi, LIN Zhen, BAI Guangjie, WANG Dong, YANG Ran
    2023, 52(4): 54-58. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.54.58
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    FEA Modeling Analysis of ISO 12835 Premium Connection for Thermal Recovery Well Service
    LIU Yang, ZHANG Wei, LIU Yuwei, LIU Guoping
    2023, 52(4): 59-64. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.59.64
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    Research on Impact Property Performance Fluctuation of Hi-strength Oil Casing
    ZHAO Yinghui, XIA Wenbin, ZHOU Yong, ZHAO Jianming, TANG Songhui, WU Run
    2023, 52(4): 65-69. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.65.69
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    Study on Corrosion Behaviors of 120 and 125 ksi Drill Pipes in NACE Solution
    ZHU Wei, OUYANG Zhiying, SHU Zhiqiang
    2023, 52(4): 70-74. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.70.74
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    Analysis of Factors Affecting Ultrasonic Detection to Hot-rolled Seamless Ti Alloy Steel Pipe
    ZHOU Xiaofeng, HOU Qiang, GAO Ruiquan, ZHAO Renshun
    2023, 52(4): 75-79. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.75.79
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    Tandem Ultrasonic Automatic Detection Technology for HFW Pipe
    CHEN Peng, ZHOU Changzhong
    2023, 52(4): 80-83. DOI: 10.19938/j.steelpipe.1001-2311.2023.4.80.83
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