Left-handed full thread steel bolt​

Left-handed full thread steel bolt

The one-way left-handed rebar bolt without longitudinal reinforcement can be used in all kinds of mines and underground projects, and is especially suitable for the support of coal tunnels with wire mesh. It has achieved good technical and economic effects.

The structural features of the anchor rod: the full length of the body has a rolled continuous thread, and the full length is of equal strength; the fastening end is provided with a prestressed gasket and a ball nut. It is superior to the bolt processed by round steel, and is a new type of bolt with material saving, labor saving and equal strength.

Features (advantages) of left-handed full thread steel bolt

1. High strength, full-thread full-length equal strength, which is 40% higher than the load-bearing capacity of the same specification anchor rod

2. Reasonable structure, large pre-tightening force, expand the use range of anchor rods, and can realize end anchors, lengthened anchors and full anchors;

3. It can automatically adjust the force direction, increase the binding force on the surrounding rock, and realize mechanized and fast installation.

4. It is used for high-strength support of large deformation roadways in high ground pressure mines, and can also be used for high-strength, permanent roadway support of various projects such as railways, hydropower, etc.