Geotub Round

For Circular Column Formwork Jobs

Geotub Round  – the only plastic formwork system for the construction of circular and oval concrete forms.

Geotub Round plastic formwork pieces can be used to create circular and oval form structures from 250 – 1,000mm in diameter.

Geoplast Geotub Round Reusable Formwork for Concrete Columns

Why Geotub Round is Better Than Traditional Formwork

  • Build circular column formwork up to 6m high with ease.
  • Non-stick – no releasing agents (form oil) required.
  • No waste disposal of cardboard or spiral ducting.
  • Tough and reusable ABS plastic.
  • Lightweight – At less than 11 kg per piece, a single person can assemble and strip. No crane necessary.
  • No training required.


Round Columns

Geotub Round Formwork for Concrete Structures

Pile Caps

Geoplast Reusable Formwork Fix Down Brackets

Oval Columns

Geoplast Geotub Oval Column Formwork

Column Repair

Geotub for round concrete column repairs


Geoplast Geotub Panel for Concrete Bollard Formwork

Case Studies

Bunnings Smithfield

Large-scale circular column formwork for elevated concrete flooring slab.

Columns built with Geoplast Reusable Round Column Forms

Technical Information

Specification Detail
 Fresh Concrete Pressure  Up to 80 kN/m2
 Max Weight  11 Kg
 Coefficient of thermal expansion  0.05 mm/m/°C
 Max Pour Heights (Single Pour)
 250 – 400mm 6m
 450 – 600mm 4.8m
 700 – 1000mm 3.6m
 Pour Rates (m / hour)
 Flowing S5 > 200mm Slump 2.5m
 Soft S4 160 – 210mm Slump 3m
 Plastic S3 100 – 150mm Slump 4m
 Stiff S2 50 – 100mm Slump 8m

Geotub Round: The Best Circular Formwork

Geotub Round is a circular column formwork for round concrete structures – a plastic formwork system that is reusable over 100 times.

Made from high-strength ABS plastic, the Geoplast range of plastic formwork products save you time and money through an ability to reuse, and reduced labor costs on the job due to its lightweight construction.

When combined with Geopanel Wall pieces, the Geotub Round concrete formwork system can assemble oval column forms ideal for underground carparks, bridge supports, and many other complex concrete formwork requirements.  

Take a look at our latest project to use Geotub Round – Bunnings Smithfield.

Discuss your project now

Contact our formwork specialists to find out how Geotub Round can save you time and money.

Need Help With Your Project?

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