Hollow Anchor bar
Classification:
Anchor bar
Key words:
Anchor bar
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Product Overview
The Self Drilling Hollow Anchor Bar is specifically engineered for coal mining roof support and stabilization in challenging underground environments. Designed to perform in fractured rock, loose soils, and high-pressure zones, this system ensures faster installation and greater reinforcement efficiency. Its integrated design combines drilling, anchoring, and grouting into one streamlined operation.
Material & Surface Treatment
Steel Grade: 40Cr, 45#、Q235. Coating: Hot dip galvanization / Cold galvanization / No coating.
PRODUCT PARAMETERS | |||||||||
Type | Outer Dia(mm) | Inner Dia(mm) | thickness(mm) | Ultimate(KN) load | Yield Load(KN) | Weight(Kg/m) | |||
R25N | 25 | 14 | 5.5 | 200 | 150 | 2.3 | |||
R32L | 32 | 21.5 | 5.25 | 210 | 1600 | 2.8 | |||
R32N | 32 | 16 | 8 | 360 | 280 | 3.4 | |||
R32S | 32 | 16 | 8 | 360 | 280 | 4.1 | |||
R38 | 38 | 17/19/22 | 10.5/9.5/8 | 450/400/350 | 550/500/420 | 6.3/5.9/5.2 | |||
R51 | 51 | 29/33/35 | 11/9/8 | 800/660/550 | 640/540/450 | 9/7.7/7 | |||
T76N | 76 | 51 | 12.5 | 1600 | 1200 | 15 | |||
T76S | 76 | 45 | 15.5 | 1900 | 1500 | 19.7 | |||
T103N | 103 | 78 | 12.5 | 2282 | 1800 | 27.3 | |||
T103S | 103 | 51 | 26 | 3460 | 2750 | 42 | |||
T30/11 | 30 | 11 | 9.5 | 320 | 260 | 3.1 | |||
T30/14 | 30 | 14 | 8 | 260 | 220 | 2.8 | |||
T30/16 | 30 | 15 | 7.5 | 220 | 180 | 2.7 | |||
T40/16 | 40 | 16 | 12 | 660 | 525 | 7 | |||
T40/20 | 40 | 22 | 9 | 539 | 430 | 5.6 | |||
T52/26 | 52 | 26 | 13 | 929 | 730 | 10 | |||
T73/53 | 73 | 53 | 10 | 1630 | 970 | 12.3 | |||
T73/56 | 73 | 56 | 8.5 | 1414 | 785 | 11 | |||
T73/45 | 72 | 45 | 14 | 1630 | 1180 | 17.8 | |||
T130/60 | 130 | 60 | 35 | 7940 | 5250 | 75 | |||
Key Features：
- Excellent mechanical interlock with grout.
- Fast drilling and anchoring process, ideal for time-critical operations.
- Anti-corrosion options available for humid or acidic mine environments.
- Compatible with various nut/plate configurations for secure face support.
Hollow anchor bolts are mainly used in railways, highways, tunnels, mines, water conservancy projects, slopes, dams, bridge foundations, rivers, seas and lakes, high-rise building foundations and building reinforcement projects.
Through the middle rod body to the bolt slurry, it can achieve the purpose of consolidating the broken rock mass, forcing the partition control and the rod body force locking, which can form support with the rock mass stably and quickly, and the rock mass can rise steadily.
Applications
- Coal mine roadway roof bolting
- Side wall stabilization in mines
- Horizontal reinforcement in drift tunnels
- Roof fall prevention in weak strata
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2023-01-13
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Address
No.181,Financial Center, Dongchang Road, Liaocheng City, Shandong Province, China