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305mm - 445mm Dia QL120 DTH Drill Bits , Durable Rock Tools Drilling Equipments

305mm - 445mm Dia QL120 DTH Drill Bits , Durable Rock Tools Drilling Equipments

305mm - 445mm Dia QL120 DTH Drill Bits , Durable Rock Tools Drilling Equipments

Product Details:

Place of Origin: Changsha,Hunan,China
Brand Name: Teamwhole
Certification: ISO9001:2008
Model Number: QL120

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: QL120 Processing Type: Forging
Carbides Shape: Spherical, Ballistic, Parabolic And Conical DTH BIT Colo: Black, Red, Gold, Blue, Grey And Etc
Bit Diameter: 305mm To 445mm Matched Hammer: QL120 DTH Hammer
Appliance: DTH Hammer | Foundation Drilling | Rock Drilling Tools HS Code: 82071300

QL120 305mm, 311mm, 330mm, 356mm, 381mm DTH Hammer Bits | Drilling tools


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.


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.


1.QL120 Bit specification


Drill Bit Bit Dia.(mm) NO.Air Gauge Front Weight(Kg) Part No.
Holes Buttons Buttons
QL120 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
  • Other size from 305mm to 445mm are available

2.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.


3.Carbide Button Shape Selection:

1. Semi-Ballistic Buttons

2. Ballistic Button

3. Spherical Button

4. Two-step Button

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

Contact Person: Ms.chen

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