Self Drilling Anchor Bolt

Self drilling anchor bolt can be used for permanent support and advance support in complex ground conditions. The pressure grouting of the bolt through the hollow rod can achieve the purpose of solidification crushing rock mass, separating the underground water and the anti-corrosion of the rod body, it can quickly form support force and control the stability of surrounding rock. Hollow bolt of the anchor body adopts hollow design, taking the rod hole as drilling grouting channel, compared with the solid ro