| Grade | Application | Temp. And Pressure |
IS 2712/1998 W/1 |
Water, steam and for some chemical high service conditions | Upto 350° c and 130 Bar |
| IS 2712/1998 W/2 | Water, steam and for some chemical medium service conditions | Upto 350 c and 40 Bar |
| IS 2712/1998 W/3 | Oils - high service conditions | Upto 350° c and 130 Bar |
| IS 2712/1998 O/2 | Oils - medium and nominal service conditions | Upto 350° c and 80 Bar |
| IS 2712/1998 A/1 | Acids - highly corrosive | Upto 250° c and 100 Bar |