Somethings you should be focused on Expansion shell hollow bar

28/dic/2015 08:45:58 sinorockzqq Contatta l'autore

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Expansion shell hollow bar adopts cement as its raw material,rapid hardening cement expansion rock bolt is composed by using ordinary portland cement or slag cement admixture, added that,which is equippted with quick-setting, early strength, low consumption of water , swelling, etc.and has been widely applied in the technology of producing anchor bolt, while one is generally made of cement drug volumes.

The drug volume should be installed into the hollow bar of cement expansion bar,and then washer can be prepared,dip the drug volume into water by handing rod body,five seconds later,auxiliary steel bar can be introduced when holding the anchor bolt into boreholes.

There are several points that should be as requirement,containing direction,position and plainess.

Expansion shell hollow bar

1.Structures: The expansion shell hollow bar of our company is a kind of new hollow bar which takes the full advantages of using experience 

in the home and aboard.This sort of expansion shell hollow bar is made of thin-wall steel pipe with concave section. The rock bolt can be opened by high pressure flow and will be fully attached to the irregular hole.Meanwhile,the rock bolt can be strengthed by the friction force,machanical locking torque,and stress that generated by the rock bolt.


(1).Fasting operation and no grouting,prevent the loss of grout and it's very convenient and efficient.

(2).Perfect vaberation resistance.It can be installed near the ground.

(3).Active force with the movement of shearing.

(4).The full length of the bolt expands and fully attach to the irregular borehole,any of the section can be an independent part and provide support.

(5).The settlement of corrosion prevention,the corrosion can be completely avoided.

(6).Add anchor plate to the expansion shell hollow bar and put it to the drilled borehole and then operate injection.The high pressure pump will stop providing water automatically when reach the standard pressure.After that,unload the injection machine and wait for the next operation.
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