Pipeline threading tractor

The invention provides a pipeline threading tractor. The tractor comprises a central tractor body and two driving wheel trains which are arranged on the central tractor body in a front-back manner andare in rolling fit with the inner wall of a pipeline, wherein each driving wheel train comprises thr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHOU SHANGYONG, XIONG ZHIDONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING CHAMBERS PROVIDED WITH MANIPULATION DEVICES CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERATION HAND TOOLS HEATING INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES JOINTS OR FITTINGS FOR PIPES LIGHTING MANIPULATORS MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PIPES PORTABLE POWER-DRIVEN TOOLS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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