..............page:115-121
Abandonment of onshore oil and gas pipelines
KANG Yewei;ZUO Li;GUO Zhenghong;RU Hongquan;XU Huatian;CHEN Hongyuan;National Engineering Laboratory of Transportation Safety of Oil & Gas Pipeline;Petro China Pipeline R & D Center;Henan Vocational College of Chemical Technology;Zhengzhou Oil & Gas Transmission Sub-company;Petro China Pipeline Company;
..............page:122-127
..............page:128-133
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..............page:171-174+179
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..............page:190-194
..............page:195-197
Installation of pipeline in heavy-gradient tunnel
CHEN Haijun;WANG Fubin;ZHANG Caixia;JIA Shimin;WANG Lijuan;WANG Lei;Langfang Special Automobile Transportation Co.Ltd.;China Petroleum Pipeline Bureau;Science and Technology Center;China Petroleum Pipeline Bureau;Zhongyuan Oil & Gas Transmission Sub-company;Petro China Pipeline Company;
..............page:198-200
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