Self drilling anchor is common used for rock mass stabilization, especially in tunneling, underground mining and ground engineering industry. Mainly this support measure is used for the supporting engineering in the loose and broken rock stratal that is difficult to drilling holes. Self drilling anchor is the optimal solution for soil nailing, lock bolting, micro-piling and so on. It fulfills current and increasing demands of the tunneling, mining industry and ground engineering for safer and faster production. The hollow anchor bar allows air and water to freely pass through the bar during drilling to remove debris and then allow grout to be injected immediately.

Sinorock SDA bolt is ideal for micropiles, soil nails, and tie down and tie back anchors in difficult ground conditions like weathered and decomposed rock, round gravel, sand and clay soils for either permanent or temporary use. The advantages of Sinorock self drilling anchor products are obvious: High quality Sinorock SDA bolt offers a fast one-stop installation and makes it possible to do drilling and grouting simultaneously. Besides it allows the use of smaller equipment at lower cost, low overhead and limited access installation. The hollow design allows air and water to freely pass through the bar during drilling to remove debris and then allow grout to be injected immediately.




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