Tunnel external thermal insulation directly-buried underground pipe

The utility model discloses a tunnel hole external thermal insulation directly-buried underground pipe which comprises a working pipe, an outer protective pipe is wrapped outside the working pipe, anda thermal insulation layer is filled between the outer protective pipe and the working pipe. The inn...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MENG QINGYU, WU XIAOCE, LIU HAIDA, WENG DONGYU, DUAN ZHENG, CHEN YU, YANG CHANGXIAN, ZHANG CHI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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