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R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer
R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer
R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer
R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer
R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer
R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer
Specifications
Brand Name :
MIROC
Model Number :
R25N
Certification :
ISO
Place of Origin :
CHINA
MOQ :
1
Price :
$75
Payment Terms :
L/C,D/A,D/P,T/T,Western Union
Delivery Time :
20-30
Bar size :
R25, R32, R38, R51, T76
Ultimate load :
200-1,900KN
Yield load :
150-1,500KN
Length :
custom length to suit your needs
Accessories :
drill bits, nut, couplings, plates
Color :
as Request
Quantity :
Small Quantity Is Acceptable
Description
R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System
The Self-Drilling Anchor (SDA) System is an advanced anchoring solution engineered for tunneling and ground engineering applications. This innovative system combines drilling, anchoring, and grouting into a single continuous operation, delivering enhanced safety, speed, and reliability in challenging ground conditions.
How the Self-Drilling Anchor System Works
During the drilling process, the hollow anchor bar facilitates the free passage of air and water, effectively removing debris from the borehole. Once the target depth is reached, grout can be immediately injected through the same hollow bar, ensuring complete encapsulation of the entire bolt in one efficient step.
Key System Features
  • Optimized for difficult ground conditions including loose, fractured, or water-bearing soils
  • High-speed installation: drilling, placement, and grouting completed in one operation
  • No casing required - hollow bar serves as both drill rod and permanent anchor
  • Capable of simultaneous drilling and grouting operations
  • Flexible installation in any direction, including upward applications
  • Ideal for confined spaces, low overhead areas, and hard-to-reach locations
  • Simple post-grouting capability for enhanced performance
Technical Specifications
Model R25N R32N R32S R38N R51L R51N T76N
Outside Diameter (mm) 25 32 32 38 51 51 76
Internal Diameter (mm) 14 19 16 19 36 33 52
Ultimate Load Capacity (kN) 200 280 360 500 550 800 1600
Yield Load Capacity (kN) 150 230 280 400 450 630 1200
Tensile Strength, Rm (N/mm²) 800 800 800 800 800 800 800
Yield Strength, Rp0.2 (N/mm²) 650 650 650 650 650 650 650
Weight (Kg/m) 2.3 3.2 3.6 5.5 6.5 8 16
Steel Grade: EN10083-1 (Alloy Structure Steel)
Compared to carbon steel, alloy structure steel offers superior anti-corrosion capacity and enhanced mechanical properties.
Self Drilling Anchor System Components
Hollow Anchor Rod Couplings Anchor Plate Anchor Nut Sacrificial Drill Bit
Product Gallery
R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer
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R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer

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Product Detail
Brand Name :
MIROC
Model Number :
R25N
Certification :
ISO
Place of Origin :
CHINA
MOQ :
1
Price :
$75
Contact Supplier
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R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer
R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer
R25N Full Thread Steel Hollow Self Drilling Anchor Bolt System – Forging Drilling Tool Manufacturer

KSQ Technologies (Beijing) Co. Ltd

Verified Supplier
13 Years
beijing, beijing
Since 2009
Business Type :
Manufacturer, Exporter
Main Products :
Rock Drilling Tools, DTH Drilling Tools, Button Drill Bit
Total Annual :
3000000-5000000
Employee Number :
50~100
Certification Level :
Verified Supplier
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