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Our triangular postal tubes are designed for sending long, rigid items that need structure and crush resistance without the drawbacks of round tubes. Manufactured from high quality kraft B flute corrugated board, they provide consistent wall strength while remaining lightweight and easy to store.
The triangular format prevents rolling during handling and transport. This reduces movement on conveyor belts and improves stability through automated sortation, which is particularly useful when sending items through postal and courier networks.
What makes our triangular tubes different
All sizes in this range are made from the same grade of kraft B flute board. B flute refers to the corrugation profile, offering a balance of rigidity and material weight, making it well suited to postal packaging. The roll-up design folds along pre-creased panels to form a strong triangular structure with reinforced edges.
Each tube features a full length peel and seal strip. This is a pressure-sensitive adhesive strip that removes the need for tape, speeding up packing and giving a clean, tamper-resistant closure. Tuck-in end tabs add further security at each end, creating multiple layers of board at the corners where impact is most likely.
Common uses
- Posters, prints and artwork
- Technical drawings, plans and blueprints
- Calendars and point of sale materials
- Long components or lightweight cylindrical products
Available sizes
We stock five popular sizes, all offered at highly competitive UK pricing:
- 310 x 100 x 100 mm
- 430 x 100 x 100 mm
- 640 x 100 x 100 mm
- 750 x 127 x 127 mm
- 950 x 142 x 142 mm
All sizes are supplied flat packed to reduce storage space and inbound transport costs. Once erected, the triangular shape allows the tubes to stack neatly without rolling, helping to keep packing benches and warehouse locations organised.
Material and sustainability
The kraft corrugated board used in these triangular postal tubes is fully recyclable through standard cardboard recycling streams. The single wall construction keeps material usage sensible while still providing the rigidity needed for postal protection.
If you are looking for a reliable alternative to round postal tubes, with faster packing and better stability in transit, this triangular range offers a practical and cost-conscious option.