Galvanized Self-Drilling Friction Bolts for Underground Mining - Easy to Install Split Set Rock Bolts in 25 Pieces per Pack

The friction stabilizer bolt is a new type of anchor providing full-length anchoring and active reinforcement of surrounding rock. It consists of an anchor rod and tray. The anchor rod is manufactured from high-strength steel pipe with longitudinal slits. When installed in a borehole slightly smaller than the pipe diameter, it immediately applies radial pressure throughout the borehole length, preventing surrounding rock from sliding down. Combined with the tray's supporting force, this creates a three-direction stress state for optimal rock stability.