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China factory - Yanggu Henglong Construction Machinery Co., Ltd.

Yanggu Henglong Construction Machinery Co., Ltd.

  • China,Liaocheng ,Hunan
  • Verified Supplier
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  3. Premium Alloy Steel DTH Top Hammer Double Casing Drill Bits With 125mm Reamed
China Premium Alloy Steel DTH Top Hammer Double Casing Drill Bits With 125mm Reamed
China Premium Alloy Steel DTH Top Hammer Double Casing Drill Bits With 125mm Reamed

  1. China Premium Alloy Steel DTH Top Hammer Double Casing Drill Bits With 125mm Reamed

Premium Alloy Steel DTH Top Hammer Double Casing Drill Bits With 125mm Reamed

  1. MOQ： 10PCS
  2. Price： Please Contact Us
  3. Get Latest Price
Inner Drill Bit Diameter 83mm
Supply Ability 3000 PCS Per month
Wear Resistance Enhanced
Payment Terms T/T
Geological Adaptability Strong
Delivery Time 7-15 Days
Impact Resistance Enhanced
Reamed Diameter 125mm
Packaging Details Wooden Boxes , Cardboard Boxes
Structural Stability Optimized
Corrosion Resistance Enhanced
Manufacturing Material Premium alloy steel
Drilling Modes Top hammer & DTH hammer
Certification ISO 9001 Certified
Brand Name HLDRILL
Place of Origin Liaocheng , Shandong , China

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  1. Product Details
  2. Company Details

Product Specification

Inner Drill Bit Diameter 83mm Supply Ability 3000 PCS Per month
Wear Resistance Enhanced Payment Terms T/T
Geological Adaptability Strong Delivery Time 7-15 Days
Impact Resistance Enhanced Reamed Diameter 125mm
Packaging Details Wooden Boxes , Cardboard Boxes Structural Stability Optimized
Corrosion Resistance Enhanced Manufacturing Material Premium alloy steel
Drilling Modes Top hammer & DTH hammer Certification ISO 9001 Certified
Brand Name HLDRILL Place of Origin Liaocheng , Shandong , China
High Light Alloy Steel DTH drill bits ，DTH Hammer Tools with dual rotary head ，125mm reamed diameter drill bits
Premium Alloy Steel DTH Top Hammer Double Casing Drill Bits With 125mm Reamed Diameter And Dual Rotary Head Layout
DTH Top Hammer Double Casing Drill Bits are high performance dual purpose drilling tools tailored for complex overburden and deep hole drilling projects. Integrating top hammer percussive drilling and DTH down the hole hammer drilling technologies in one set, this double casing drilling system delivers outstanding adaptability for diverse geological conditions, becoming core equipment for straight, stable, and deep borehole construction in geothermal development, water well drilling, foundation engineering, and grouting sampling projects.
Core Product Specifications
Reamed Diameter : 125mm
Inner Drill Bit Diameter : 83mm
Manufacturing Material : Premium alloy steel 
Core Features
Crafted with high strength alloy steel and professional surface hardening treatment, our double casing drill bits break the limitations of traditional single drilling tools. The optimized surface strengthening process greatly enhances overall wear resistance, impact resistance and corrosion resistance, effectively extending the tool's service life and reducing frequent replacement costs for drilling operations.
Adopting a simplified and rational integrated structure, this double casing drilling unit minimizes structural failure risks and mechanical faults during high intensity drilling. Its unique dual rotary head layout is installed on independent adjustable sliding bases, allowing flexible independent calibration of the inner drill string and outer casing bit position. Operators can precisely adjust the drilling state according to on site geological changes.
Combined with the professional DTH down the hole drilling system matched with the inner drill string, this dual mode double casing drilling equipment achieves far greater drilling depth and stability than conventional single top hammer drifter drilling systems. It is widely recognized as the preferred solution for high precision straight deep hole drilling in the industry.
Drilling Technology Comparison
Top Hammer Type Drilling Inside the Casing DTH Hammer Type Drilling Inside the Casing
Top hammer type drilling inside casing diagram DTH hammer type drilling inside casing diagram
Superior Product Performance
Optimized Structural Stability : Streamlined mechanical structure design reduces component wear and failure probability, ensuring continuous and stable operation with low maintenance frequency.
Strong Geological Adaptability : The adjustable inner and outer casing matching structure effectively copes with variable and complex ground conditions, avoiding common problems such as hole deviation, hole collapse and slow footage.
Wide Application Scenarios
  • Geothermal drilling and geothermal well grouting reinforcement
  • Foundation drilling for construction, bridge and municipal engineering
Working Principle of Dual Drilling Modes
Top Hammer Type
First, assemble the casing reaming crown bit with the outer casing pipe. Relying on the percussion and propulsion power of the rig drifter, drive the outer casing pipe to penetrate and complete the laying of the first section casing. Next, connect the inner drill bit with the drill rod, and follow the inner cavity of the outer casing pipe for synchronous drilling until the first section drilling operation is finished. Then integrate the drill rod and outer casing pipe as a whole, and push the whole assembly forward via the rig drifter until the outer casing reaches the preset drilling depth. When drilling into stable bedrock, no additional casing pipe is required, and the drill rod can be directly used for continuous deep drilling to the target depth.
Top hammer type drilling process diagram
DTH Type
Initially , fix the casing reaming crown bit and outer casing pipe, and use the rig's percussion power to drive the outer casing pipe to advance and complete the first section casing laying. Subsequently, install the DTH hammer on the matching drill rod, and conduct synchronous follow up drilling inside the outer casing pipe to finish the first section hole forming. After that, connect the drill rod and outer casing pipe tightly, with the rig providing propulsion and the DTH hammer delivering high frequency percussion to drive the drill rod and casing pipe forward together until the outer casing is in place. For subsequent bedrock drilling procedures, conventional professional drilling tools can be used to continue drilling to the designed depth efficiently.
Different from traditional single mode drilling bits, our DTH top hammer double casing drill bits realize free switching of two drilling technologies. The independent adjustable dual rotary structure ensures high flexibility in on site operation, allowing engineers to adjust drilling parameters and tool states in real time according to soft soil, gravel layer, hard rock and other complex stratums. It guarantees straight hole forming, stable footage and high construction qualification rate, making it an economical and efficient drilling solution for various overburden and deep hole engineering projects.
DTH type drilling process diagram
DTH and Top Hammer Type Double Casing Drilling Tools
Complete DTH and top hammer double casing drilling tools overview

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Manufacturer,Exporter,Trading Company,Seller,Other

  • Year Established:

    2018

  • Total Annual:

    10000000-30000000

  • Employee Number:

    30~50

  • Ecer Certification：

    Verified Supplier

HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr... HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr...

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Get in touch with us

  • Reach Us
  • Yanggu Henglong Construction Machinery Co., Ltd.
  • 4F,6# Building,No.19 Hunan Road,Liaocheng City,Shangdong province,China
  • https://www.drillbuttonbit.com/

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