The self-drilling anchoring system consists of a hollow threaded bolt fitted with a corresponding drill bit to perform drilling, anchoring and grouting in one go.The self-drilling anchor system is mainly used in slope stability, tunneling advance, micro-pile foundation and other engineering, widely used in mining, tunnel, railway, subway and other engineering.

An r-threaded bolt, or bolt, anchor, is a threaded hollow rod with a surface design of wavy threads according to ISO 10208 and 1720.It was first invented by MAI in the 1960s to speed up the construction of complex underground projects.It is still popular all over the world today.

Thread specification: R25, R32, R38, R51, T76

Thread standard: ISO10208, ISO1720, etc