Mining Steel Self Drilling Hollow Anchor Bolts, Grade : R32

We offer self drilling anchor bolt combines drilling, grouting and anchoring together. It ensures the anchoring effect in complex ground conditions. It�s safe, reliable and efficient.
1. Casing free in the operation. Anchor bar is also a drill pipe which is convenient and time-saving.
2. Drilling and grouting can be done simultaneously. With good grouting spread radius and reliable anchoring quality, fractures can be filled effectively.
3. The anchor bar with standard full thread can be cut according to your requirement. The cut anchor bars can be connected by couplers. It�s suitable in narrow work space.
4. Due to the continuous r-thread and t-thread, self drilling anchor bolt has higher bonding stress.