What is Rcc pipes? Precast concrete pipes, also known as “Rcc Pipes” or “Hume Pipes” are produced by the centrifugal spinning process, discovered by Walter Hume Australia. Reinforced concrete pipes used in water supplies are classified as P1, P2. and P3 with test pressure of 2.0, 4.0 and 6.0 Kg/cm2 respectively. For use on gravity mains the working pressure should...