Self drilling anchor system can be integrated with the functions of drilling, grouting and anchoring, which is suitable for broken rock and surrounding rocks which are difficult to drill holes.
High-pressure grouting is carried out though hollow anchor bar, which has good grouting and reliable anchoring quality.
Hollow anchor bar can be extended by couplers, which is suitable for the narrow space that the large equipment can not enter.
High efficiency, low composite cost, safe.
-Hollow Anchor Bar