Sinorock is a leading supplier and manufacturer of hollow bar.We are able to develop products designed for the specific applications of our customers through our continued research into new and innovative technologies,we also have many advanced product lines for hollow bar manufacturing.
Because the hollow bar has more advantages, so is widely used in tunnel advance support, radial support, slope reinforcement, roadbed reinforcement and engineering diseases repairing.
Features of hollow bar
1.Particularly suitable for difficult ground conditions.
2.A high rate of installation since drilling, placing and grouting can be performed in one single operation.
3.Self drilling system eliminates the requirement for a cased borehole.
4.Installation with simultaneous drilling and grouting possible.
5.Easy installation in all directions, also upwards.
6.Suitable for working in limited space, height and in areas of difficult access.
7.Simple post grouting system. • Hot-dipped galvanizing for corrosion protection