R25 Self-Drilling Hollow Anchor Bolt

The self-drilling anchor bolt mainly consists of a hollow anchor rod body, nut, bearing plate, coupling sleeve, centralizer, and drill bit. The self-drilling anchor bolt integrates drilling, grouting, and anchoring functions, and is suitable for broken surrounding rock where hole formation is difficult.

Self-drilling anchor bolts can be used for slope support, foundation pit support, pile foundation support, tunnel pipe roof support and system support, foundation support for transmission towers or wind towers, and repair of old buildings, etc.

Hengnuo self-drilling anchor bolts are divided into R series and T series, with models including R25, R32, R38, R51, T30, T40, T52, T76. Different product types and models can be selected according to different engineering requirements.

Product structure:

Parameters:

Hollow anchor rod body:

Drill bit:

Product advantages:

1. The R25 self-drilling anchor bolt can perform simultaneous grouting while drilling to achieve the anchoring effect. Its construction efficiency is higher than that of ordinary hollow anchor bolts, and it is suitable for broken surrounding rock where hole formation is difficult.

2. No casing is needed for wall protection during construction, which can improve construction efficiency, shorten the construction period, and reduce the overall project cost.

3. The hollow anchor rod body can be cut at will and extended through coupling sleeves. Therefore, self-drilling anchor bolts can also be used in narrow spaces where large equipment cannot enter.

4. Compared with conventional drill rods for rock drilling tools, the R25 self-drilling anchor bolt is equipped with a rich variety of drill bits, which can be selected according to different rock formations and soil properties during construction, thereby improving drilling efficiency.

Application fields:

Self-drilling anchor bolts can be used for slope support, foundation pit support, pile foundation support, tunnel pipe roof support and system support, foundation support for transmission towers or wind towers, and repair of old buildings, etc.

1. Foundation and foundation engineering

2. Slope engineering

3. Tunnel and underground engineering