When we choose a stainless steel pipe for oil wells, we should know that the pipe can be able to resist corrosion even in such severe corrosive environment that CO2 and Cl are being and with high temperature. what's more, it also should have a YS of 654 MPa strength. So the high strength stainless steel pipe is excellently used in oil well.

Here is the pipe contains based on a mass percent : C:0.005% to 0.05%, Si:0.05% to 0.5%, Mn:0.2% to1.8%, P:0.03% or less, S:0.005% or less, Cr:15.5% to 18%,Ni:1.5% to 5%, Mo:1% to 3.5%, V:0.02% to 0.2%, N :0.01% to 0.15%, O:0.006% or less, and the balance being Fe and unavoidable impurities.