Draining dredger for totally-closed petrochemical engineering dangerous material pipeline

The invention relates to a draining dredger for a totally-closed petrochemical engineering dangerous material pipeline. The dredger comprises a pipe sleeve, a pipe sleeve upper flange and a pipe sleeve lower flange, wherein a driven worm is arranged in the middle of the pipe sleeve and is provided w...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG ZHIFENG, WANG MINGCHEN, XING DONG, GUO LIXIU, SUN QIAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CLEANING CLEANING IN GENERAL PERFORMING OPERATIONS PREVENTION OF FOULING IN GENERAL TRANSPORTING
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