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Changsha Sollroc Engineering Equipments Co., Ltd
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12" Numa Down The Hole Numa120 DTH Button Drill Bits For Rock Drilling

Changsha Sollroc Engineering Equipments Co., Ltd
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12" Numa Down The Hole Numa120 DTH Button Drill Bits For Rock Drilling

Brand Name : SOLLROC
Model Number : Numa120 dth bits
Certification : SGS
Place of Origin : China
MOQ : 1 set
Supply Ability : 30000 sets per month
Delivery Time : 3-4 weeks
Packaging Details : Cartons + ply wood case (no plastic)
Product name : Numa120 dth bits
Diameter : 302mm, 311mm, 330mm, 356mm,381mm
Air pressure : 10-30 bar
Applications : waterwell drilling and rock drilling
Face shape : Flat, Convex, Concave
Keyword : Numa120 bit
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12" Numa Down The Hole Numa120 DTH Button Drill Bits For Rock Drilling


Product specifications: Numa120 dth bits

For 12" hammer
DTH bits shank
Bit Dia.No
Air
Holes.
Gauge
Buttons
Front
Buttons
Weight
(Kg)
Part No.
mminch
DHD112030512"412×φ1836×φ16152.0DHD1120-305
31112 1/4"412×φ1836×φ16157.0DHD1120-311
33013"416×φ1842×φ16165.0DHD1120-330
35614"416×φ1948×φ16178.0DHD1120-356
38115"416×φ1948×φ18198.0DHD1120-381
SD1230512"412×φ1836×φ16156.0SD12-305
31112 1/4"412×φ1836×φ16168.0SD12-311
33013"416×φ1842×φ16180.0SD12-330
35614"416×φ1948×φ16191.0SD12-356
38115"416×φ1948×φ18200.0SD12-381
NUMA12030512"412×φ1836×φ16152.0NUMA120-305
31112 1/4"412×φ1836×φ16158.0NUMA120-311
33013"416×φ1842×φ16165.0NUMA120-330
35614"416×φ1948×φ16178.0NUMA120-356
38115"416×φ1948×φ18195.0NUMA120-381
NUMA12530512"412×φ1836×φ16170.0NUMA125-305
31112 1/4"412×φ1836×φ16173.0NUMA125-311
33013"416×φ1842×φ16182.0NUMA125-330
35614"416×φ1948×φ16191.0NUMA125-356
38115"416×φ1948×φ18200.0NUMA125-381


Product photos



it 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

Shank styleDiameter in mmFlushing holes No.Gauge buttonsFace buttonsApprox.weight


NUMA120
305412*18mm36*16mm152.0kg
311412*18mm36*16mm158.0kg
330416*18mm42*16mm165.0kg
356416*19mm48*16mm178.0kg
381416*19mm48*18mm195.0kg

We are a leading manufacturer of rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Changsha, Hunan, China.
We have rich experience in this field of DTH hammers and bits for 20 years.
Owing to high quality, professional serivce and competitive price, we have gotten good reputation from our customers from all over the world, such as France, Spain, Italy, South Africa, Iran, Malaysia, Australia ad etc.



Product Tags:

oil well drilling tools

      

water well drilling tools

      
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12" Numa Down The Hole Numa120 DTH Button Drill Bits For Rock Drilling Images

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