Diamond drill bit

The invention discloses a diamond drill bit which comprises a drill bit base body. A cooling hole penetrating through the whole base body is formed in the center of the drill bit base body; a diamond abrasive disc is fixedly connected with the end portion of the drill bit base body and is of a round...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	JIN SHILONG, JIN DAISHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	PERFORMING OPERATIONS TRANSPORTING WORKING CEMENT, CLAY, OR STONE WORKING STONE OR STONE-LIKE MATERIALS
Online-Zugang:	Volltext bestellen
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