This standard specifies requirements for centrifugally cast (spun) iron pressure pipes with socket and spigot ends, used for conveying water, gas, and sewage. It details the dimensions, tolerances, mechanical properties, and hydrostatic testing criteria for Class LA, A, and B pipes.
Specifies requirements for centrifugally cast (spun) iron pipes intended for use as pressure pipes for water, gas, and sewage.
Quick Reference Values
minimum tensile strength200 MPa
maximum brinell hardness230 HB
hydrostatic test pressure class LA upto DN 6003.5 MPa
hydrostatic test pressure class A upto DN 6003.5 MPa
standard pipe lengths3 m to 6 m
Practical Notes
Although this code remains active, modern water infrastructure projects generally prefer Ductile Iron (DI) pipes (IS 8329) due to superior tensile strength and impact resistance.
Class LA is generally sufficient for standard municipal water supply networks, whereas Class A and B are used where higher internal working pressures or heavier external earth/traffic loads are expected.
Pipes must be uniformly coated with a bituminous composition that does not impart any taste or smell to the water.