Handan Zhongfu Industrial And Mining Accessories Co., Ltd.
Handan ZhongFu company is a professional manufacturer for underground mining supporting products with over ten year experience. We can manufacture Split sets ,friction bolt, Combi split sets, Expandable friction bolt,Swellex, Threaded bar bolt, Cable bolt, Combi cable bolt, Welded mesh, Domed plate, Nuts, other mining Equipment.
friction bolt
What Is a Split Set Rock Bolt?
It is a new type of anchor rod that actively strengthens the surrounding rock through full-length anchoring. Its three-dimensional part is a high-strength steel pipe with a longitudinal slit. When installed in a borehole slightly smaller than the diameter, it can immediately apply radial pressure to the borehole wall and prevent the frictional force of the surrounding rock from sliding down within the entire length range. Combined with the support force of the anchor rod tray, it puts the surrounding rock in a three-dimensional stress state and achieves the greatness of the rock layer. In the case of blasting vibration and rock anchoring displacement, the anchoring force increases significantly in the later stage. When the rock undergoes significant displacement, the staggered rod does not lose its support resistance, and it has better characteristics than the expansion shell anchor rod.
Initial anchoring force: 3-7 tons;
Pipe ring pull-out load: 8-10 tons:
Anchor rod tube tensile strength: 12-13 tons:
The corrosion resistance is 20-30% higher than A3 steel, which is conducive to long-term use.
Our address
West Side Of Jianshe Street, Southwest Industrial Zone, Linmingguan Town, Handan, Hebei, China
Phone Number
+8615830050566
zfgongkuang@aliyun.com
