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Yanggu Yihui Drilling Tools Co.,Ltd.

ADDRESS:No.216 Zhengyang Road, Qingdao, Shandong,China.



SDA Hollow Bar Anchor Bar

SDA Hollow Bar Anchor Bar

Self drilling anchor system is comprised of a hollow threaded anchor bar with a sacrificial drill bit that performs drilling, anchoring and grouting in a single operation....

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Self drilling anchor bar

The SDA bar system offers quick installation because of drilling, borehole stabilization and grouting are combined in one cycle.

1With alloy bit of high penetration, this anchor is easy to cut through various rocks under the help of rock drill. 
2With continuous standard wave-shape thread, it can be used to drill holes with the help of bit.
3It’s unnecessary to be pulled out when it is used as the drilling pipe and grouting can be carried out by making good use of the hollow cavity.
4)With grouting stopper of high efficiency, the pressure of grouting can be kept at high level , and voids can be fully filled and fractured rocks can be consolidated. In addition, the stress of surrounding rock at deep can be evenly transferred to the surrounding rock of tunnel wall under the help of high-strength plate and nut, realizing mutual support between surrounding rock and anchor bar. 
5With the high-strength coupling, it can be used in narrow space since elongation is available while drilling, realizing the design concept of reinforcing rock mass with extra-long anchor bar.
6Anchor holes is formed without needing bushing and pre-grouting , and the anchoring and grouting quality are guaranteed.



10-20 days after confirming order, detail delivery date should be decided according to production season and order quantity.


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