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    Technical Progress and Development of Product Functionization of Welded Pipe
    HU Songlin
    2021, 50(4): 1-5. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.01.05
    Abstract PDF
    Influence of Edition Revision of API Standard for Tubing and Casing on Quality Controlby Manufacturers
    LI Guanghui, SHI Jiaoqi, JI Bingyin
    2021, 50(4): 6-11. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.06.11
    Abstract PDF
    Analysis of Process Technology for Seamless Steel Tube Rotary Expanding Mill
    LUO Tao
    2021, 50(4): 12-19. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.12.19
    Abstract PDF
    Influence of Welding Material Matching and Alloy Components on Low-temperature Toughness of X80 Linepipe
    ZHANG Tingting, LIU Zhihua, JIN Zhenya, YAO Hongkun, JI Feng
    2021, 50(4): 20-24. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.20.24
    Abstract PDF
    Study on Method as Used to Determine Strain Hardening Exponent of Linepipe with High Deformation Resistance
    ZHEN Xiaochuan, HUANG Jin, CHEN Yan
    2021, 50(4): 25-28. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.25.28
    Abstract PDF
    Effect by Galling on Connection Strength of Round-threaded Casing
    LI Bing, GAO Lianxin
    2021, 50(4): 29-33. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.29.33
    Abstract PDF
    R & D of X70 Hi-strain SAWL Pipe for Offshore Service
    MIN Xiangling, WANG Xu, LIU Tao, BAI Xuewei, FANG Wen
    2021, 50(4): 34-38. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.34.38
    Abstract PDF
    Study on Manufacturing Process Flow of Mini-flow Rotary Expanding Mill
    CHANG Xinggang, LIU Jinsong
    2021, 50(4): 39-41. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.39.41
    Abstract PDF
    MATLAB APP-based Development of Simulation Software for Continuous Rolling of Seamless Steel Pipe Based
    ZHANG Jian, HU Jianhua, WANG Qinghua, SHUANG Yuanhua, ZHOU Yan
    2021, 50(4): 42-45. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.42.45
    Abstract PDF
    Design and Development of Dual-layer String for Service in Shale Gas Well
    ZHANG Xu, ZHANG Zheping, WU Yongchao, WU Liangliang, ZHOU Jiaxiang, HUANG Yongzhi
    2021, 50(4): 46-50. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.46.50
    Abstract PDF
    Analysis of External Fold Defect of 20Mn2 Seamless Steel Tube for Automobile Axle Service
    GUO Zhiqiang
    2021, 50(4): 51-55. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.51.55
    Abstract PDF
    Development and Application of Manufacturing Process for Small-sized GCr15 Bearing-purposed SteelTube
    WANG Zenghai, WEN Bo, GAO Heping, LIN Zhen
    2021, 50(4): 56-58. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.56.58
    Abstract PDF
    Analysis of Reasons for Leakage of 37Mn High Pressure Gas Cylinder
    WANG Yong, HUANG Youqi, WANG Shiming
    2021, 50(4): 59-62. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.59.62
    Abstract PDF
    Cause Analysis of Corrosion Failure of N80 Tubing in a Certain Water Injection Well
    DU Xiaojie, YANG Yang, YANG Zhongna, FENG Dianwen
    2021, 50(4): 63-66. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.63.66
    Abstract PDF
    Failure Analysis of Girth Weld Leakage of a Certain Refined Oilpipeline
    LIU Kuirong, REN Guoqi, WANG Gaofeng, ZHANG Hao
    2021, 50(4): 67-70. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.67.70
    Abstract PDF
    Performance Evaluation of Nano-copper Composite Antifriction Coating as Applied to J55 Tubing
    YANG lineng, LI Changliang, MENG Zhao, WU Xilong
    2021, 50(4): 71-75. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.71.75
    Abstract PDF
    Comparison on Charpy Impact Test Methods
    CHEN Song, ZHU Binyan
    2021, 50(4): 76-79. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.76.79
    Abstract PDF
    Case Study of Service-oriented Manufacturing of International Advanced Steel Pipe Enterprises
    TANG Ling
    2021, 50(4): 80-83. DOI: 10.19938/j.steelpipe.1001-2311.2021.4.80.83
    Abstract PDF