Satisfactory comprehensive mechanical properties of the P110 oil casing depends on proper quenching and tempering treatment conducted according to appropriate heat treatment procedure as set up on the basis of the phase change law.

Technological practice of oil casing steel 39Mn2V with 150 t EAF-LF/VD-CC route;

The features of corrosion film of P110 oil tube steel in oil field water with high minerlization and high temperature and pressure environment containing CO_2;