Connecting ring for rotary drilling rod

The utility model discloses a connecting ring for a rotary drilling rod in the technical field of connecting rings. The connecting ring comprises a connecting ring body and the rotary drilling rod, the internal thread lantern ring is arranged in the inner wall of the top of the connecting ring body;...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YOU DUNCHENG, MENG XIAODONG, WANG DONGDONG, LIN ENBO, CHAI XIAOYUE
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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