Tubbox® Round

Spiral:
Tubbox® formwork tubes in the “Spiral” version create a
concrete surface with a normal void pattern and a slight
imprint of the tube’s spiral winding structure.
The column formwork is an economical and functional
solution.

Smooth:
Thanks to a plastic liner, Tubbox® formwork tubes in the “Smooth”
version produce a smooth concrete surface with occasional voids.

Void-Free:
In Tubbox® formwork tubes “Void-Free”, the integrated
Zemdrain® brand formwork liner ensures a largely void-free
surface and increases the surface hardness of the concrete edge layer.
An overlap of the Zemdrain® liner is visible.