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A STUDY CONCERNING TECHNIQUE FOR DRAWING SEAMLESS STEEL TUBE WITH Y TYPE THREE－ROLL DIE AND LONG MANDREL |
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Zheng Baolong; Li Lianshi (Beijing University of Science and Technology) |
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INVESTIGATION OF PERFORATION CRACKING OF J55 CASING |
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Ji Lingkang;Xiong Qingren;Zhang Yi (O. C. T. G. Research Institute,China Petroleum & Natural Gas General Company)Jiang Liwei (Technical Supervision Centre,Supplies Dept., Daqing Oil Field) |
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CC ROUND THERMAL CRACKING VS PERITECTIC POINTS |
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Su Liuji; Wang Zhemin; Huang Hua (Chengdu Seamless Steel Tube Co., Ltd.) |
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PROSPECS OF DEVELOPMENT OF WELD-PIPE CATEGORY |
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Fang Changsheng (Shanghai Steel Tube Co.,Ltd.) |
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DEVELOPMENT OF U TYPE HIGH-PRESSURE HEATER PIPE |
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Song Baoxiang;Zhu Maorong (Chengde Steel Tube Group Gorp.,Jiangsu) |
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DEVELOPMENT AND APPLICATION OF HIGH-FREQUENCY/SUBMERGED ARC DUAL-FUNCTION SPIRAL WELD-PIPE MILL LINE |
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Fang Wen;Deng Baogun;Wu Zhanfang (No. 1 Machinery Plant,Huabei Petroleum Administration) |
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APPLICATION OF READY-SWITCH-OVER TO MANDREL TRANSMISSION SYSTEM |
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Wang Renbo (Lubao Steel Tube Plant,Baoshan I & S Group) |
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MECHANISM OF PLUG PIPE MILL FOR TUBE 90 DEGREE ROTATION |
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Chai Fujun;Zhang Hongchang;Li Yan (Tianjin Institute of Technology)(Tianjin Municipal Seamless Steel Tube Plant) |
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DESIGN AND MANUFACTURE OF END-FACING/CHAMFERING MACHINE FOR STEEL TUBES |
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Zhang Peiqing (Design & Research Institute,Taiyuan Mining Machinery Manufacturer) |
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MANUFACTURING PROCESS AND QUALITY CRITERIA FOR LONG-DISTANCE TRANSPORT-PURPOSE LINE PIPES |
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Tong Lianxun;Sun Jiatong (Huludao Steel Tube General Plant) |
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MODIFICATION OF CONNECTION BETWEEN ANVIL AND DIE OF PNEUMATIC HAMMER |
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Luo Ruiwen (Guangzhou I & S Co., Ltd.) |
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SELECTION AND APPLICATION OF MATERIAL USED FOR RETAINED-MANDREL OF DIESCHER PIPE MILL |
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Wang Shijun (Technical Centre, Anshan I & S Group Corporation) |
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STUDIES ABOUT PROLONGING SERVICE LIFE OF PIERCING PLUG |
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Cao Pengjun;Wu Haidong;Hu Anguo (Chongqing I & S Technical College) (No.3 Works, Chongqing I & S Co.) |
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APPLICATION OF DISCRETE SPECTRUM TO ULTRASONIC FLAW INSPECTION OF HCC ROUNDS FOR PIPE-MAKING |
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Zuo Jianguo (Hengyang Steel Tube Co., Ltd.) |
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TRIPLE-COATING SYSTEM FOR STEEL TUBE SURFACE PROTECTION |
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