Drainage device for first-aid repair of gas pipeline and use method
The invention relates to the technical field of gas pipeline first-aid repair, in particular to a drainage device for gas pipeline first-aid repair and a using method, and the drainage device comprises a gas pipeline buried underground and a dug first-aid repair groove. According to the drainage dev...
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Main Authors | , , |
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Format | Patent |
Language | Chinese English |
Published |
18.07.2023
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Subjects | |
Online Access | Get full text |
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