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Hollow Self Drilling Injection Anchor R51L 51mm for rock drilling , grouting

100 pcs
Hollow Self Drilling Injection Anchor R51L 51mm for rock drilling , grouting
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Anchor Coupling


Self Drilling Rock Bolt

Basic Infomation
Place of Origin: Germany
Brand Name: ROSCHEN
Certification: ISO, API
Model Number: 25 32 32 38 51 R25N R32L R32N/1 R32N R32S/1 R32S R38N/1 R38N/2 R38N R51L/1 R51L R51N/1 R51N
Payment & Shipping Terms
Packaging Details: Wooden box packaging
Supply Ability: 2000000 pcs
Product Description


Hollow Self Drilling Injection Anchor R51L 51mm for rock drilling , grouting


1. Introduction  
Self Drilling Hollow Injection Anchor is a kind of bar integrated with the functions of drilling, grouting and anchoring, and it can ensure anchoring for complex ground conditions. It’s safe, reliable and efficient.


2. Application
The product is suitable for broken rock, loose soil and difficult to bore hole. Conditions such as fault fracture zones, decayed rock, gravel, sandy gravel, backfill ground. Various drill bits for different ground conditions to attain a optimal result.

3 Application for project:
1. permanent support for tunnel excavation
2. Slope stabilization. Rock bolt and soil nailing can be used to maintain and strengthen soil and rock, so as to stabilize buildings.
3. micro pile reinforcement. Micro pile can transmit structural loads to foundation, limiting deformation of buildings.


4. Features:
1. Casing free for operation. Drill pipe is also anchor bar, and it’s convenient and time-saving.
2. Grouting works synchronize with drilling or after drilling. Grout can fill fractures effectively. It has good grouting spread radius and reliable anchoring quality.
3. The standard thread screw on the bar, and bar can be cut or lengthened according to your demands. It applies to narrow spaces.
4. It provides higher bonding stress than smooth steel pipe depending on continuous wave and T thread.


5. Specifications: 

R -thread Hollow Anchor Bar
Size Outer Dia. Inner Dia. Ultimate Load Yield Load Weight
mm mm KN KN Kg/m
R25N 25 12 200 150 2.3
R32L 32 20.5 210 160 2.9
R32N/1 32 20.5 280 230 2.9
R32N 32 18 280 280 3.5
R32S/1 32 18 360 280 3.5
R32S 32 15 360 280 4.1
R38N/1 38 22.5 500 400 4.8
R38N/2 38 21 500 400 5.6
R38N 38 19 500 400 6
R51L/1 51 39 550 450 5.6
R51L 51 36 550 450 7
R51N/1 51 34 800 630 7.7
R51N 51 33 800 630 8.5





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Contact Person : Bill, George, Michael
Tel : 8613764195009
Fax : 86-021-54380177
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