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

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.

In two-phase fluid medium of sulfate acid solution,corrosion wear properties of N80 and P110 oil well tube steels were investigated with a self-assembly wearing device,and synergistic rate and interactive ratio of corrosion wear for two steels were comparatively analyzed respectively, and choice of service condition of two steels was discussed.