Handan Zhongfu Industrial And Mining Accessories Co., Ltd.
ZF Mining's Split Set Friction Rock Stabilizers are high-strength steel tubes used for immediate ground support in underground mining and tunneling. Unlike traditional bolts, the Split Set provides full-length friction support the moment it is installed. Whether you are dealing with roof bolting or rib support, our friction bolts ensure maximum safety in dynamic ground conditions.
TECHNICAL PERFORMANCE
|
Initial anchoring force |
3T~7T |
| Pipe ring pull-out load | 8T~10T |
| Anchor rod pipe tensile strength | 12T~13T |
| Corrosion Resistance | 20~30% higher than A3 steel, |
| Outside diameter (mm) | Ф30, Ф33, Ф40, Ф43(+0.5) etc. |
| Length (mm) | 1200,1500,1800,2000,2500 etc. |
| material | Q235, Q335, 16Mn, 20 Mnsi |
| Model | Tube Diameter | Hole Diameter | Steel Thickness | Typical Loads (Pull-out) |
| SS33 | 33mm | 30-32mm | 2.0mm - 2.5mm | 3-6 Tons |
| SS39 | 39mm | 35-38mm | 2.0mm - 3.0mm | 6-12 Tons |
| SS46 | 46mm | 41-45mm | 3.0mm - 4.0mm | 12-18 Tons |
friction bolt Working principle
friction bolt Working principle
Pipe slit anchor is a full-length anchoring, active reinforcement of the surrounding rock of the new anchor, its three-dimensional part is a longitudinal slit of high-strength steel pipe, when installed in slightly smaller than the diameter of the pipe drilling, can be immediately in the full-length range of radial pressure on the hole wall and stop the surrounding rock sliding friction, coupled with the anchor tray pallet bearing force, so as to make the surrounding rock in the three-way force state, and to achieve the rock layer great.
In the case of blasting vibration surrounding rock anchor displacement, etc., the late anchoring force has a significant increase.
When significant displacement of surrounding rock occurs, the anchor does not lose its support resistance, it has better characteristics than the rising shell type anchors.
Technical characteristics
Raw material adopts high-strength alloy strip steel
Installation is the easiest
No anchoring agent required
High friction between anchor and body.
High shear and tensile strength.
Equipped with high strength pallet, the pallet force is uniform.
The height of the roadway is greater than the length of the anchor.
friction Anchor Technical Requirements
The surface of the sewing tube anchor should be flat, without serious strains, rust and corrosion. The weld should be free of cracks, no air holes and slag, not allowed to burn through the pipe wall. The pallet should be able to move freely on the rod. It is appropriate that the retaining ring interface and the pipe seam opening are misaligned with each other 1700-1900.
Retaining ring weld pull-off force ≥80KN, rod ultimate tensile force ≥110KN, initial anchor force ≥25kN/m, pallet bearing capacity ≥65KN.
application
FAQ
Q: What is the lifespan of a galvanized Split Set bolt?
A: With hot-dipped galvanization, our Split Sets can last over 10-20 years in typical corrosive underground environments.
Q: How do I choose between SS33, SS39, and SS46?
A: It depends on your rock type and required load. SS39 is the most common for coal mining, while SS46 is used for heavy-duty hard rock support.
Q: Do you provide pull-out test reports?
A: Yes, every batch of ZF Mining friction stabilizers undergoes rigorous tensile testing. We can provide SGS or internal lab reports upon request.
Our address
West Side Of Jianshe Street, Southwest Industrial Zone, Linmingguan Town, Handan, Hebei, China
Phone Number
easonoflangben@langben.net
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