Dig barrel drill bottom plate fishing device soon

The utility model discloses a dig barrel drill bottom plate fishing device soon, including first body, the bottom welding of first body has the second body, first slot hole has all been offered to the2nd pipe body inner cavity's both sides, the through -hole has all been seted up at the top of...

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Bibliographische Detailangaben
1. Verfasser:	ZHENG WEIHUANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
Online-Zugang:	Volltext bestellen
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