Quality Inspection for Surface Down The Hole Drills - Retractable Drill Bit – TDS

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Quality Inspection for Surface Down The Hole Drills - Retractable Drill Bit – TDS Detail:

Button bit is well known for its high wear resistance on medium-hard to hard abrasive rock formations (between 200 Mpa to 260 Mpa compressive strength).Featuring spherical tungsten carbide inserts that is known to have strong configuration against carbide fracture.

• Recommended for eliminating hole deviation

• Widely used drifting and tunneling

• Bit face design is ideal for medium-hard to hard abrasive rock

• Color: Green,Blue or Based on Customer requirements

China supplier R25 R38 T38 T45 T51 GT60 retrac thread rock button drill bits. Can customize to design bit diameter,air hole quantity as well as bit head shape.Alloy button shape can be changed according to requirement.

Bit Dia.(mm)	Thread Connection	*QtyButton Dia(mm)Gauge**	*QtyButton Dia(mm)Front**	Air Holes Front	Air Holes Side	Weight(kg)
43	R28	5X10	2X9	1	3	0.9
51	R32	6X10	3X9	3	-	1.0
76	R32/R38/T38	7X10	4X10	1	2	2.6
89	T38/T45/T51	8X12	4X12+2X10	4	2	4.3
102	R32/T38/T45	8X14	6X12	2	2	5.6
110	T45/T51	7X14	5X13	3	-	5.8
115	T45/T51	7X14	6X14	4	-	6.0
127	T45/T51/GT60	8X14	7X13	2	1	6.5
140	T51/GT60	8X16	7X14	2	1	8.9
152	T51/GT60	8X16	8X14	2	1	10.0

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