Adopting superior carbon structural seamless steel tube, perfect superficial thread and delicate accessories, it can indeed realize drilling, grouting and anchoring together.

It is a kind of self drilling hollow anchor bolt. It consists of hollow anchor bar, drill bit, coupling, packer, plate and nut. It combines grouting and drilling together and adapts several construction situation and different geological conditions.

It is a kink of self drilling hollow anchor bolt. It is a new and high technological supporting product which combines drilling, grouting and anchoring together.

It is a kind of hollow anchor bolt, it can be used as dust ejector tube before grouting. It can eliminate dust in the drilling hole. Grout slurry can be erupted out from drill bit, then it can fill surrounding drill hole and stratum fracture. It makes anchor bolt combine with surrounding soil texture, forms concrete column with steel pipe,and then has the effect of reinforcement.