How many class of GI pipes?

GI pipes, or galvanized iron pipes, are typically classified into three main classes based on their thickness and application: Class A, Class B, and Class C. Class A pipes are the thinnest, suitable for less demanding applications, while Class B pipes offer medium thickness for general use. Class C pipes are the thickest and are used for more demanding applications requiring higher durability and strength. The specific class chosen depends on the pressure requirements and the intended use of the piping system.