Sinorock is the most professional supplier for Self-drilling bars,we offer a comprehensive range of anchors and equipment to suit a wide variety of situations in the ground engineering and construction industries. Hollow grouting Self-drilling bar is a solution for unconsolidated ground condition such as weak rocks,loose soil,weathered layer，sand with stone layer and so on.
Self-drilling bar is an advanced anchor system, which is composed by hollow anchor bar, nut, plate, coupler, drill bit, centralizer.And anchor bars can be cutted & lengthened by coupling according to your demands.The sizes we can provide include R25, R32, R38, R51, T30, T40, T52, T73, T76, T103, T111, T127, T130. This anchor system can be integrated with the functions of drilling, grouting and anchoring. It is safe，reliable and time saving.