... as cutting edges.PDC bit is mainly used for geological prospecting,oilfield drilling,coal ecploration,water conservancy ... .0±0.1 mmNQ130413.30 mm4.50 mm1.0±0.1 mmPCD/PDC diamond cutters for coal mining bits ... as cutting edges.PDC bit is mainly used for geological prospecting,oilfield drilling,coal ecploration,water ... 1 mmNQ100410.00 mm4.50 mm1.0±0.1 mmNQ130413.30 mm4.50 mm1.0±0.1 mm pcd cutter for ...