The ALL SIGN SYSTEMS Aluminium Fluted Poles are extruded from strong structural grade 6061 T6 aluminium and supplied with white plastic caps. They are finished with a maintenance free white polyester powder coating making them ideal for coastal locations. The ALL SIGN SYSTEMS poles are deemed to comply with the impact requirements of NZTA P24:2020 – Specification for Permanent Traffic Signs. Features & Benefits Poles are light and easy to handle and convenient to transport. Pole sizes are standard allowing all available bracket types to fit. Aluminium frangible poles size for size are comparable in strength with steel equivalents. Manufactured from marine grade alloy poles will remain maintenance free. Poles are easy to install with no specialist equipment required. Frangibility is multi-directional. In the event of damage poles can be easily removed and replaced using existing foundations The alloy has the following characteristic properties: f y = 255 MPa fu = 295 MPa % elongation to failure = 7% over a gauge length of 50mm or 5.65/A Wall Thickness (mm) relating to the trough and crest of the fluting:- 60mm Pole 2.80 3.75 76mm Pole 3.05 4.00 89mm Pole 3.55 4.50 102mm Pole 4.10 5.00 114mm Pole 4.60 5.50