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    Present situation of steel pipe industry and development countermeasures
    LI Xiao
    2021, 50(6): 1-5.
    Abstract PDF
    Situation of Domestic Welded Pipe Market and Suggestion for Countermeasures
    HU Songlin
    2021, 50(6): 6-11. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.06.11
    Abstract PDF
    Study on Microstructure and Properties of EBW Weld of Vacuum Composite Blank
    WANG Guanglei, DANG Jun, HUANG Lixin, CHE Chao, ZHAI Dongyu, WANG Changmin
    2021, 50(6): 12-15. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.12.15
    Abstract PDF
    Effect by Average Tensile Stress on Fatigue Life of Linepipe
    CHEN Yan, HUANG Zhaoli, LIU Jiangcheng, ZHANG Zheping, ZHANG Chuanyou, Li Yan, ZHANG Guozhu
    2021, 50(6): 16-20. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.16.20
    Abstract PDF
    Development of Large-sized P92 Seamless Steel Pipe Used for Ultra-supercritical Thermal Power Unit
    ZHANG Guozhong, HUANG Dabing, DOU Zhichao, LIU Hong, XU Lujun
    2021, 50(6): 21-25. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.21.25
    Abstract PDF
    Development of Stainless Steel Seamless Pipe for Cooling Blast Furnace Bottom
    ZHENG Wenjie
    2021, 50(6): 26-30. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.26.30
    Abstract PDF
    Effect by Pipe-mandrel Contact Angle of the 3-roll Mandrel Mill on Internal Scratch of the Gas Cylinder-purposed Pipe
    YUE Shibin, WANG Jiugang
    2021, 50(6): 31-34. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.31.34
    Abstract PDF
    Analysis of Outer Fold Defect of HS140HC Casing
    JIN Boying, ZHAO Jianming, NI Yuanqiong
    2021, 50(6): 35-38. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.35.38
    Abstract PDF
    Preventative Measures Against LSAW Pipe Hydrogen-introduced Defect
    WANG Lizhu, HAN Tieli, ZHANG Jinli, CHEN Long, SUN Yongqi, LV Yudong
    2021, 50(6): 39-41. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.39.41
    Abstract PDF
    Factors Affecting Dimension Accuracy of Steel Pipe Serving as Deep-water Riser and Relevant Production Practice
    HU Ping, HOU Jing, YUE Shibin, WANG Jiugang, YANG Weiguo, HUANG Zhaoli, LIU Yaoheng
    2021, 50(6): 42-46. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.42.46
    Abstract PDF
    R & D of Process with Slight-expansion Technology for Producing Extra-heavy-wall Hot-rolled Seamless Steel Tube
    LUO Zhonghui, KAO Ran, MI Yongfeng, GUO Zhiwen, JIANG Hailong, XU Bochao, MENG Qingfei
    2021, 50(6): 47-49. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.47.49
    Abstract PDF
    Discussion on Design of 3-roll Slight Stretch-sizing(reducing)Process
    GUO Haiming, LI Linlin, ZHANG Yao, ZHANG Weidong, HU Bin
    2021, 50(6): 50-55. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.50.55
    Abstract PDF
    Fatigue Failure of Trailer Axle and Countermeasures
    ZHENG Dongwei, LI Songtao, WANG Xin, ZHAO Chenguang
    2021, 50(6): 56-60. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.56.60
    Abstract PDF
    Analysis of Cause for Collapse and Pull-over of 13Cr Tubing Used in a Certain High-pressure Gas Well
    LV Shuanlu, SONG Yang, XIONG Maoxian, MA Lei, WANG Hua, ZHAO Mifeng, ZENG Nu
    2021, 50(6): 61-64. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.61.64
    Abstract PDF
    Study on Heat Treatment Process for 4130X Seamless Steel Tube for Large Gas Cylinder Service
    YU Zejin, MI Yongfeng, JIANG Hailong, ZHANG Xinggang, JIA Dongmei, PEI Fuli, LUO Zhonghui
    2021, 50(6): 65-67. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.65.67
    Abstract PDF
    MATLAB-based Development of Piercing Process Software for Seamless Steel Pipe
    JIA Shiying, WANG Qinghua, HU Jianhua, SHUANG Yuanhua
    2021, 50(6): 68-71. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.68.71
    Abstract PDF
    Friction and Wear Properties of Carbide Material for Cold-drawing Dies
    ZENG Yanggen, WANG Zhensheng, LIU Jun, ZHANG Dagong
    2021, 50(6): 72-75. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.72.75
    Abstract PDF
    Discussion on UT of Longitudinal Defect of Extra-heavy Wall Tube
    GAO Xiang, PENG Jun, LI Donghua, HU Caiwang
    2021, 50(6): 76-79. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.76.79
    Abstract PDF
    Design and Application of a 360° Panoramic Endoscope for Pipe and Pipeline
    LI Jin, CHEN Gui, WANG Feng
    2021, 50(6): 80-83. DOI: 10.19938/j.steelpipe.1001-2311.2021.6.80.83
    Abstract PDF