Special pricking head for repairing inspection well

The special pricking head for repairing the inspection well comprises an annular support, a plurality of arc-shaped blocks arranged at equal intervals are fixedly connected to the annular support, the cross section of the annular support is in a circular ring shape, and sealing rings are fixedly con...

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Bibliographische Detailangaben
Hauptverfasser:	LI HUI, ZHANG JIE, HUANG ZONGREN, WU HONGMING, LI WANCHAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CESSPOOLS FIXED CONSTRUCTIONS SEWERAGE SEWERS WATER SUPPLY
Online-Zugang:	Volltext bestellen
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