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{"title":"Rock T45 Threaded Drill Rod , Extension Drill Rods For Underground Powerhouse","imgUrl":"https:\/\/img.chinax.com\/nimg\/f1\/ca\/a6f814f4def3890d437847d61149-200x200-1\/rock_t45_threaded_drill_rod_2c_extension_drill_rods_for_underground_powerhouse_excavation.jpg","attrs":{"Brand Name":"MIROC","Model Number":"T45","Place of Origin":"China","Minimum Order Quantity":"50"}}
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 RodCouplingsAnchor PlateAnchor NutSacrificial Drill Bit
Product Gallery
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2009
Total Annual:
3000000-5000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
KSQ Technologies (Beijing) Co. Ltd. has significant experience and know-how in the supply of materials, components, finished goods, specially designed/engineered equipment, and services from China. The company caters to medium to large scale clients who are doing projects and capit...
KSQ Technologies (Beijing) Co. Ltd. has significant experience and know-how in the supply of materials, components, finished goods, specially designed/engineered equipment, and services from China. The company caters to medium to large scale clients who are doing projects and capit...
