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  • Marco Nigro

An Egyptian installer had this issue and asked us for help. This is what happened.

Updated: Sep 27, 2022

They needed to pre drill a hole between 250-300mm In diameter. Read on to find out more.

2,500Nm drill rotary head can easily manage a 200mm diameter hole

The large rotary drill head can easily manage a 200mm hole, but to pre drill a 250-300mm diameter hole customisations need to be done.

What kind of customisations are needed for a 250-300mm diameter hole?

A shock absorber needs to be added to the DTH. Is that easy to do? Yes. We would need the DTH dimensions you intend to use so we can make the necessary adjustments.

Watch a video of DTH in use by visiting the Tonker 830 page on

#dth #downthehole #pilingrig #drilling #drillrotaryhead #piledriveruk #mgi

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