The MAI® Self-Drilling Hollow
Core Bolt is a unique Anchoring System and is today’s answer to the increasing demands of the
tunnelling industry for safer and faster Production. .
It provides advantages for all areas of it’s applications, where boreholes would
require the time consuming drilling with
casing systems in unconsolidated or cohesive soil.
The main Advantages of the
MAI Self-Drilling Hollow Core Bolt
are:
A high rate of installation since
drilling, placing and grouting can be
performed in one single operation.
No removal of casing and drill rods.
Similar installation methods for all
ground conditions.