Armtec - Ultra Flo Steel Pipe
Armtec Ultra Flo is a storm sewer pipe with a unique external rib corrugation that provides a significant improvement in hydraulic performance over traditional corrugated steel pipe, reducing the Manning’s value to 0.013.
Ultra Flo pipe is produced by a continuous spiral seam method. Stiffness is provided by external box-shaped ribs, 19 mm x 19 mm, at 190 mm centres.
Ultra Flo performs as a flexible compression ring under load, redistributing pressure radially into the surrounding high-density soil. The unit pressure at the pipe invert can be as little as one-third of the unit pressure under a rigid pipe in identical loading conditions.
- Fast installation
Lightweight and long lengths with minimal joints
Available in galvanized steel, aluminized steel, polymer-laminated and aluminum steel to suit environmental conditions
- Nestable pieces
Efficient shipping for remote locations
Lowest installed cost compared to large-diameter concrete storm sewer
- Efficient Hydraulics
Ultra Flo’s low “n” factor is equivalent to or less than the standard .013 usually used in storm sewer design
- Efficient shipping for remote locations – pieces can be nested
- Lowest installed cost compared to other large diameter storm sewer materials
- Couplers provide mechanical pull-apart resistance – critical in soft soils
- Variety of materials to match design service life to material service life
- Municipal storm sewers, especially in large diameter in long runs
- Highway median drainage
- Industrial storm sewers
- Large diameter culvert slip-lines
- Stormwater detention tanks
- Round Range – 450, 525, 600, 750, 900, 1050, 1200, 1350, 1500, 1650, 1800, 2000, 2200, 2400 mm
- Pipe Arch – from 500 mm span x 410 mm rise to 1,850 mm span x 1,400 mm rise.
- Length – up to 10 m (max)
- Corrugation Wall Profile:
- Corrugation – 19 mm x 19 mm x 190 mm
- Wall thickness – 1.6 mm to 2.8 mm
- Conventional couplers available
- H500 Hugger Band Couplers recommended for storm sewer applications
- Canadian Standards Association (CSA) G401