Tunneling through cobblestone and loose ground has long been a tough challenge for geotechnical contractors. Traditional anchors struggle in unstable, collapsing formations. Self-drilling hollow grouting bars offer a practical, all-in-one anchoring solution that works well not only in intact stable rock but also in loose gravel and cobblestone layers.
The hollow bar acts as a drill rod and built-in grout pipe. Resin cartridges, structural grout or rapid-hardening cement can be pumped through its central bore. Its hollow threaded design delivers superior rigidity and shear performance versus solid anchor rods. The external large-pitch thread increases bonding contact with grout, raising overall anchoring capacity. Threaded segments can be easily cut and coupled on-site to match project depth requirements.
Core AdvantagesThis anchor system consists of expansion shell anchor head, hollow grouting bar, grout stop, bearing plate and lock nut.
On-Site Quality SpecificationsStandard pre-job briefings and training are mandatory for crews. Engineers must mark anchor layout points precisely. Site supervisors monitor mortar water-cement ratio, grout pressure and injected volume to guarantee stable ground reinforcement.
주소
4F,6# 빌딩, 19호 후난 도로, 중국 상동성, 랴오첸 시
Tel
86-0635-8278268
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