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.
What is the construction method for hollow rock bolt?
Anchor holes are drilled by wind-operated rock drill in stone tunnels and coal electric drill in loess tunnels. Anchor drilling using excavation steps to set up a simple platform drilling, according to the design spacing of holes; drilling direction as far as possible perpendicular to the structural surface or the surface of the initial spraying concrete; anchor holes than the diameter of the rod 15 mm, the depth error shall not be greater than 50mm; after the hole is formed, the use of high-pressure wind clean hole.
Our address
West Side Of Jianshe Street, Southwest Industrial Zone, Linmingguan Town, Handan, Hebei, China
Phone Number
+8615830050566
zfgongkuang@aliyun.com
