Since self-drilling hollow anchor bar construction is strong technical work, each working procedure must be meticulous operation, otherwise it will effect the whole piece of anchor rod construction quality because of a process of negligence .Therefore, the operator must be higher technical quality, a clear division of responsibilities.
The self drilling hollow anchor bar combines drill bolt and hollow rod together and it is widely used in various engineering conditions including weak rock,loose soil,decayed rocks and unconsolidable earth mass and so on.Meanwhile,the holllw bar can be jointed or cut by using coupling at any point according to our client's various kind of requirements. Equipped with anchor head,stop-grouting plug and couples, hollow anchor bar can provide strong bonding stress between anchor bolt and boreholes to install holow bar anchor in the center of borehole,so that the bolt will be able to acquire average procetion thickness and the durability of rod body can be extensively improved.
Sinorock hollow anchor bar can completely solve the problems of conventional anvhoring system.