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Polyethylene (PE) double-tube heat insulating tube crossing tee joint alarm line fixing device and fixing method
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Fixing device and fixing method for intelligent prefabricated directly buried double-barreled thermal insulation tube alarm line
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Device and method for fixing alarm lines to crosslinked polyethylene thermal-insulating pipe crossing tee joint
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Plate type hot melting welding coated joint plug for prefabricated directly-buried insulating pipeline system and plugging method
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Intelligent prefabrication direct burial crosslinked polyethylene thermal insulation pipe double-barreled elbow alarm line fixing method
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Monitoring device and method for alarm cable of prefabricated directly-buried insulating pipe
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Intelligent thermal insulation steel pipe double-barreled reducing tee pipeline alarm line fixing device and fixing method
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Joint coating support for prefabricated directly-buried insulating pipeline system and installing method
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Fixing device and method for intelligent prefabricated directly-buried thermal insulation pipe double pipe elbow alarm lines
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Intelligent prefabricated directly-buried insulating pipe steel pipe double-pipe crossing tee joint and fixing method for alarm cables
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Joint coating plate fusion welding high-pressure clamp for prefabricated directly-buried insulating pipeline system and clamping method
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Intelligent prefabricated directly-buried heat-preserving pipe cross-linked PE (Poly Ethylene) working double pipe and fabricating method
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Intelligent prefabricated directly-buried thermal insulation pipe crosslinked polyethylene working pipe and manufacturing method
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Method for fixing alarm lines of intelligent prefabricated directly-buried crosslinked polyethylene thermal insulation pipe fitting elbow
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Telescopic connector repairing sleeve of prefabricated direct-embedded heat preservation pipeline system and connecting method
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Hot melting buried wire joint coating plate device for prefabricated directly-buried insulating pipeline and manufacturing method
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Double working steel pipes of prefabricated directly-buried insulating pipe and manufacturing method
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On-site connector joint coating insulating foaming bag and foaming method for prefabricated directly-buried insulating pipe system
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Transporting bolster device in transportation of prefabricated directly-buried insulating pipes and using method
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Crosslinked polyethylene double-pipe parallel tee joint of intelligent insulating pipe and fixing method for alarm cables of tee joint
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