Description

Impregnated Diamond Bits

Impregnated diamond (ID) bits are rotary drag bits, which are specifically dedicated to drill hard and abrasive rock formations. Performing like a grinder wheel, the cutting face ID bits is continuously evolving during drilling, exposing new and sharp diamonds.

Rock Type	Abrasiveness	Rock Hardness	Matrix Hardness	Series. NO
Clay，Shale,Siltstone, Cypsum	Medium	Soft	HRC 50	GV1#
Ash Stone, Coal, Argilite,, Volcanics, Sandy Pebble	Very High	Soft	HRC 48-50	GV1/ GV2
Sandstone, Sandy Shale, Lithoid, Limestone, Limonite Sandstone	Very High	Medium Soft	HRC 45-48	GV1#/ GV2
Medium-hard, Limestone, Medium-hard Shale, Medium-hard Ash Stone	High	Medium	HRC 40-45	GV3/ GV4
Marble, Hard Schist, Hard Streak Stone	Medium	Medium	HRC 38-42	GV5/ GV6/ GV7
Diabase, Andesite, Gneiss	Medium	Medium Hard	HRC 38	GV6/ GV7
Grandiorite, ,Limonite	Medium	Medium Hard	HRC 35-38	GV7/ GV8
Cranite, Basalt, Hard Streak Stone	Medium To Low	Hard	HRC 32-35	GV8/ GV9
Rhyolite, Crystauize Gneiss, Quartz Porphyry	Medium To Low	Hard	HRC 25-30	GV9/ GV10
Silicious Stone, Hard Sandstone	Medium To Low	Extreme Hard	HRC 20-25	GV11/ GV12
Rhyolite, Dense Quartzite, Iron Stone	Low	Ultra Hard	HRC 10-20	GV12#

Bit Gauges:

SIZE	CORE DIAMETER		HOLE DIAMETER
SIZE	(in)	(mm)	(in)	(mm)
BQ	1.433	36.4	2.345	59.6
NQ	1.875	47.6	2.965	75.3
HQ	2.500	63.5	3.763	95.6
PQ	3.345	85.0	4.805	122.0
NQ3, NQTT	1.775	45.1	2.965	75.3
HQ3, HQTT	2.406	61.1	3.763	95.6
PQ3, PQTT	3.270	83.1	4.805	122.0

Service

The technical support team may provide remote or on-site support to resolve issues encountered by users during use.
Provide original spare parts to ensure timely replacement of worn or damaged parts to maintain the normal operation of DTH bits.
Timely information reply throughout the day, the first time to solve your problems.