Abstract: Described here in the article are the manufacturing processes for the Φ48 mm×7.5 mm 0Cr15Ni5Cu2Ti hi-strength,martensitic precipitation hardening stainless steel pipe,focusing on details concerning the main processes such as the hot-working(hot-piercing),cold-working,heat treatment and pickling,and the analysis of the effects on the mechanical properties of the pipe by the solution temperature and the aging temperature.It is concluded as follows via the analysis.A more satisfactory piercing quality can be ensured,provided that the 0Cr15Ni5Cu2Ti billet is heated at 1 100~1 130 ℃ with a holding time of 20 min;employing the combined process of NaOH alkali bursting and HNO₃+HF pickling can rather effectively cleaning up the scale on both the inner and outer surfaces of the shell;and using the heat treatment process of quenching at 950~980 ℃ with a holding time of 30 min plus tempering at 590~600 ℃ with a holding time of 4 h can bring about good comprehensive mechanical properties of the finished 0Cr15Ni5Cu2Ti pipe.