What is grade 330 and grade 410 in is 3589 pipe?

In IS 3589, which pertains to the specifications for mild steel pipes used for water supply, grade 330 and grade 410 refer to the different tensile strength classifications of the pipes. Grade 330 has a minimum yield strength of 330 MPa, while grade 410 has a minimum yield strength of 410 MPa. These grades indicate the strength and durability of the pipes, with higher grades typically suitable for more demanding applications. The choice between the two grades depends on the specific requirements of the project and the conditions the pipes will face.