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Double sealing and double blocking of DN426 crude oil pipeline in Xiaohe Town, Xiangyang
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Tianjin DN500 natural gas pipeline operation
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Tianjin DN500 6.4Mpa crude oil double sealing and double blocking operation
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Horizontal drilling operation of Shougang DN1200 coking coal pipeline
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Double sealing and double blocking of jet fuel DN219 in Pudong District, Shanghai
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Shandong Shengli Oilfield Operation
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Shandong DN500 double-sided double-sealed high-pressure leather bowl plugging
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Saiwei DN50 cyanosilane construction
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Hubei Shayang Crude Oil DN200 Construction
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Hubei Qianjiang DN200 oil pipeline operation
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Hubei Jingmen high pressure crude oil 219 double sealing operation
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Double sealing operation of DN200 high pressure crude oil pipeline in Jingmen, Hubei