12" High Air Pressure Down The Hole DTH Button Bits

• Customized: Customized
• Standard: API
• Material: Tungsten Carbide
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: NUMA120
• Usage: Well Drilling, Mining, Construction, Quarrying
• Shape - Face: Flat or Concave or Convex
• Air Pressure: High Air Pressure
• Technology: Themal Insert
• Transport Package: Wooden Case
• Specification: CE ISO
• Trademark: JEAO
• Origin: China
• HS Code: 84314320
• Production Capacity: 1000 Sets Per Months

Product Description

Drill bit:1.Cemented carbide buttons 
2.Reasonable designs 
3.Three kinds of faces design 
4.Certificate: ISO9001:2008, SONCAP 
 
 
Application range: All kinds of rock formation.
Face design: flat, convex, concave
Inserts design: spherical, ballistic, parabolic
Features:  1.Reliable quality, long service life,  rare abnormal breakage during service life.
                   2.Good flushing effect to ensure high drilling rate
                   3.Strict quality warranty and compensation rules
                   4.High penetration rate
                   5.Longer service life
Markets: Italy, France, Russia, Greece,Canada,Korea, Chile, Brazil, Nigeria, Mongolia and etc.
Examples For Ordinary Bits
Concave, spherical(other designs of faces and inserts are available)
 

12" Shank Bit	Bit Dia(mm)	Bit Dia (Inch)	Air Hose	Guage Button	Front Buttons	Part No
DHD1120	305	12"	4	12×φ18	35xφ16	DHD1120-305
	311	12 1/4"	4	12×φ18	35xφ16	DHD1120-311
	330	13"	4	16×φ18	42xφ16	DHD1120-330
	356	14"	4	16×φ19	48xφ16	DHD1120-356
	381	15"	4	16×φ19	48xφ18	DHD1120-381
SD12	305	12"	4	12×φ18	35xφ16	SD12-305
	311	12 1/4"	4	12×φ18	35xφ16	SD12-311
	330	13"	4	16×φ18	42xφ16	SD12-330
	356	14"	4	16×φ19	48xφ16	SD12-356
	381	15"	4	16×φ19	48xφ18	SD12-381
NUMA120	305	12"	4	12×φ18	36×φ16	NUMA120-305
	311	12 1/4"	4	12×φ18	36×φ16	NUMA120-311
	330	13"	4	16×φ18	42×φ16	NUMA120-330
	356	14"	4	16×φ19	48×φ16	NUMA120-356
	381	15"	4	16×φ19	48×φ18	NUMA120-381
NUMA125	305	12"	4	12×φ18	36×φ16	NUMA125-305
	311	12 1/4"	4	12×φ18	36×φ16	NUMA125-311
	330	13"	4	16×φ18	42×φ16	NUMA125-330
	356	14"	4	16×φ19	48×φ16	NUMA125-356
	381	15"	4	16×φ19	48×φ18	NUMA125-381