RCC Hume Pipes (Also known as Spun Pipes) are used for sewerage, drainage, culverts,irrigation,water supply / transportation,service lines etc.
According to BUREAU OF INDIAN STANDARDS concrete pipes shall be classified as under:
NP2 :- Reinforced Concrete Non-Pressure Pipes
Used For :- Light-duty drainage and irrigation/water transportation use, cross drains/culverts carrying light traffic.
NP3 :- Reinforced Concrete Non-Pressure Pipes
Used For :- Medium-duty drainage and irrigation/water transportation use,service lines, cross drains/culverts carrying medium traffic
Np4 :- Reinforced Concrete Non-Pressure Pipes
Used For :- Heavy-duty drainage and irrigation/water transportation use, cross drains/culverts carrying heavy traffic.