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Foundation Drilling DTH Hammer Bits , Hole Size 3 ½ - 40 Inches Rock Drill Bits

Foundation Drilling DTH Hammer Bits , Hole Size 3 ½ - 40 Inches Rock Drill Bits

Foundation Drilling DTH Hammer Bits , Hole Size 3 ½ - 40 Inches Rock Drill Bits

Product Details:

Place of Origin: Changsha,Hunan,China
Brand Name: Teamwhole
Certification: ISO9001:2008
Model Number: Numa DHD SD QL

Payment & Shipping Terms:

Minimum Order Quantity: 1
Price: Negotiation
Packaging Details: dth bits are packed by Woodens outer side, and Cartons inner side.
Delivery Time: Shipped in 25 days after payment
Supply Ability: 5000pcs/month
Detailed Product Description
Model: Numa DHD SD QL Processing Type: Forging
Carbides Shape: Spherical, Ballistic, Parabolic And Conical DTH BIT Colo: Black, Red, Gold, Blue, Grey And Etc
Bit Diameter: 3 ½ To 40 Inches Matched Hammer: Numa DHD SD QL DTH Hammer
Appliance: DTH Hammer | Foundation Drilling | Rock Drilling Tools HS Code: 82071300

DTH Hammer | Foundation Drilling | Rock Drilling Equipment With DTH Bit Hole Size From 3 ½ to 40 inches

 

DTH solutions for large holes--Where there’s solid rock and a need for large diameter holes, then the most efficient method of drilling the holes are DTH hammers.

 

1. About Changsha Tianhe Drilling---

Manufacturer---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.
Experience--in this field of DTH hammers and bits for 20 years.

Export countries---our customers from all over the world, such as France, Spain, Italy, South Africa, Iran, Malaysia, Australia ad etc.

 

2. Changsha Tianhe Brand Teamwhole DTH bit

  • Made from premium alloy steel and high quality tungsten carbide.
  • Heat treated and shot peened to deliver a durable and reliable balance of strength and toughness.
  • Large bit forgings are individually ultrasonically tested and screened for inclusions and flaws.
  • Specially designed bits for kinds of rock formation
  • Multiple varieties of head, face, shank and inserts available.
  • Advanced flow simulation used to improve chip removal and reduce noise.

3. DTH Bit specification

Drill Bit Bit Dia.(mm) NO.Air Gauge Front Weight(Kg) Part No.
Holes Buttons Buttons
SD10 254 3 12*Φ18 20*Φ16 108 SD10-254
305 4 12*Φ18 36*Φ16 125 SD10-305
311 4 12*Φ18 36*Φ16 130 SD10-311
318 4 12*Φ18 36*Φ16 142 SD10-318
330 4 16*Φ18 42*Φ16 155 SD10-330
Numa100 254 3 12*Φ18 20*Φ16 90 Numa100-254
305 4 12*Φ18 36*Φ16 102 Numa100-305
311 4 12*Φ18 36*Φ16 104 Numa100-311
318 4 12*Φ18 38*Φ16 106 Numa100-318
330 4 14*Φ18 42*Φ16 112 Numa100-330
DHD112 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 TK14 HYPER141 381 4 20*Φ19 54*Φ18 297 NUMA125--381
406 4 20*Φ19 58*Φ18 311 NUMA125--406
431 4 20*Φ19 64*Φ18 324 NUMA125--431
445 4 24*Φ20 72*Φ18 334 NUMA125--445
470 4 24*Φ20 80*Φ18 347 NUMA125--470
495 4 24*Φ20 88*Φ18 710 NUMA125-495
TK18/NUMA180/TH18 495 4 24*Φ20 88*Φ18 710 NUMA180-495
525 4 24*Φ20 100*Φ18 760 NUMA180-525
580 4 24*Φ20 116*Φ18 855 NUMA180-580
660 4 28*Φ20 140*Φ19 950 NUMA180-660
680 4 28*Φ20 144*Φ19 968 NUMA180-680
TH24/NUMA240 711 4 28*Φ20 154*Φ19 1455 NUMA240-711
762 4 32*Φ20 172*Φ19 1539 NUMA240-762
780 4 32*Φ20 180*Φ19 1564 NUMA240-780
825 4 36*Φ20 216*Φ19 1625 NUMA240-825
998 4 40*Φ20 348*Φ19 1980 NUMA240-998
TH28 800 6 54*Φ20 66*Φ20+90*Φ18 1363 TH28-800
900 6 60*Φ20 66*Φ20+105*Φ18 1536 TH28-900
1000 6 68*Φ20 74*Φ20+123*Φ18 1804 TH28-1000
1100 6 76*Φ22 84*Φ20+140*Φ18 2117 TH28-1100
1200 6 86*Φ22 96*Φ20+159*Φ18 2300 TH28-1200

 

4. Bit Face Shape Selection:

1) Drop Center Bit

----For high penetration rates in soft to medium hard and fissured rock formations. 

2) Concave Face

----The all-around application bit face specifically for medium hard and homogeneous 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 theload and wear on the gauge buttons, but poor hole deviation control.

4) 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.

 

5. Carbide Button Shape Selection:

1. Semi-Ballistic Buttons

2. Ballistic Button

3. Spherical Button

4. Two-step Button

 

6. Photos

Foundation Drilling DTH Hammer Bits , Hole Size 3 ½ - 40 Inches Rock Drill Bits

 

Contact Details
Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.

Contact Person: Ms.chen

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