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12" - 15"DTH Hammer Bits SD12 DTH Bit Rock Drill Bits For Drilling

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Changsha Sollroc Engineering Equipments Co., Ltd

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12" - 15"DTH Hammer Bits SD12 DTH Bit Rock Drill Bits For Drilling

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Brand Name :	SOLLROC
Model Number :	SD12 dth bits
Certification :	SGS
Supply Ability :	20000 sets per month
Delivery Time :	3-4 weeks

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12" - 15"DTH Hammer Bits SD12 DTH Bit Rock Drill Bits For Drilling

12" 13" 14" 15"DTH Hammer Bits SD12 DTH Bit Rock Drill Bits For Drilling

Product specifications: SD12 DTH bits

Drill Bit	Bit Dia.(mm)	NO.Air Holes	Gauge Buttons	Front Buttons	Weight(Kg)	Part No.
DHD1120	305	4	12*Φ18	36*Φ16	152	DHD1120-305
	311	4	12*Φ18	36*Φ16	157	DHD1120-311
	330	4	16*Φ18	42*Φ16	165	DHD1120-330
	356	4	16*Φ19	42*Φ16	178	DHD1120-356
	381	4	16*Φ19	42*Φ18	198	DHD1120-381
SD12	305	4	12*Φ18	36*Φ16	156	SD12-305
	311	4	12*Φ18	36*Φ16	168	SD12-311
	330	4	16*Φ18	42*Φ16	180	SD12-330
	356	4	16*Φ19	48*Φ16	191	SD12-356
	381	4	16*Φ19	48*Φ18	200	SD12-381
NUMA120	305	4	12*Φ18	36*Φ16	152	N120-305
	311	4	12*Φ18	36*Φ16	158	N120-311
	330	4	16*Φ18	42*Φ16	165	N120-330
	356	4	16*Φ19	48*Φ16	178	N120-356
	381	4	16*Φ19	48*Φ18	195	N120-381
NUMA125	305	4	12*Φ18	36*Φ16	170	N120-305
	311	4	12*Φ18	36*Φ16	173	N120-311
	330	4	16*Φ18	42*Φ16	182	N120-330
	356	4	16*Φ19	48*Φ16	191	N120-356
	381	4	16*Φ19	48*Φ18	200	N120-381

The characteristics of high air pressure DTH Button Bit:

1. Deliver maximum energy to drilling bit, fast drilling speed and low air consumption due to inner structure of HD series DTH hammer designed according to newest rock drilling theory.
2. Smooth performance and long service life of HD series DTH hammer due to high quality alloy steel materials and advanced processing technology adapted.
3. Low problem rate and easy to maintenance due to simple , reliable and easy assemble and disassemble inner structure of hammer.
4. Easy to depart bit from hammer due to multi-head thread connecting chuck and cylinder of hammer.
5. Interchangeable with DTH bit and dill pipe manufactured by Atlas copco and Ingersoll-rand.
Bit face shape selection:
1. Drop Center Bit
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
2. Concave Face
The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.
3. Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.
4. Double Gauge Face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
5. Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.
Carbide button shape selection:
1. Domed/Round Button
2. Parabolic/Semi-Ballistic Buttons
3. Ballistic Button
4. Sharp Button
5. Flat Button

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