Hydraulic tong protection device

The utility model discloses a hydraulic tong protection device and belongs to the technical field of petroleum drilling, oil extraction and workover rigs. A Z-shaped stroke valve fixing rack is connected with an inclined plate; two fixing rack fixing holes are distributed in the Z-shaped stroke valv...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LI HUI, TU JINWU, TANG XINGTI, YANG XIONG, LIU JIANA, BING TONGLIN, HAN YANTAO, ZUO XIUHUA, LI YOUJUN
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
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