There are a lot of kinds of self drilling hollow anchor bar that has been extensively used in mining,tunneling,slope stabilization,foundation support,railway station and it is also widely applied to some moisture air like wharf,bay,coast,band and other working constructions.
I would like to present many of its sorts and the possible projects have been referred above.
1)Friction hollow anchor bar,frction between the rod body and borehole is so strong that there is no need for the architecturer to worry about the effect of the hollow anchor bar in the projects.
2)Self drilling hollow anchor bar,it is made of reinforced concrete steel material,it can make anchoring,drilling,grouting as a single operation.
3)Permanent hollow anchor bar,the service life of hollow anchor bar is in connection with the main engineering project,the valid proceedings of construction play essentisal parts in offering good quality and standard criteria for self drilling hollow anchor bar,which can reach a long service life with the development of the technology and society.
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