**available as special order only

Manufacture of Reinforced Concrete Cylinder Pipe begins with a hydrostatically tested steel cylinder and attached steel joint rings. The cylinder assembly and one or more reinforcing cages are positioned between inside and outside forms, and the concrete is placed by vertical casting.

For Dimensions: Contact Us.

Manufacture of Bar-Wrapped Concrete Cylinder pipe begins with a fabricated steel cylinder with joint rings attached, which is hydrostatically tested to 0.75 times the specific yield point of the steel cylinder. A cement-mortar or concrete lining is placed, by the centrifugal process, inside the cylinder. After the lining is cured, the cylinder is wrapped with a smooth, hot-rolled steel bar, using a moderate tension in the bar. The size and spacing of the bar, as well as the thickness of the steel cylinder, are proportioned to provide the required pipe strength. The total steel area required, including bars and cylinder, is determined by the classical hoop tension pressure vessel formula, limiting the average steel stress to 18,000 psi or 50% of the specified minimum yield strength. The design also provides an additional capacity for transient surge pressure of at least 50% of the working pressure. For example, a class 200 pipe has a total capacity (working pressure + surge pressure) of 300 psi. Other surge allowances can be used. The cylinder and bar wrapping are covered with a cement slurry and a cement-rich dense mortar coating.
The mortar coating has a minimum thickness of 19mm (3/4in) over the bar (or 25mm (1in) over the cylinder).

Hyprescon manufactures AWWA C-303 from 350mm (14in) to 500mm (20in) in diameter. Other diameters may also be manufactured upon request.