Abstract: Detailed here is the manufacturing method of“hot extrusion+quenching and tempering”for the HP2 13Cr seamless steel pipe，involving such process flows as chemical composition design，melting，diameter forging extrusion and heat treatment.Results from relevant physical performance detections and inspections show that the said pipe as manufactured with the above mentioned method is in possession of good mechanical properties and well-controlled metallographic structure，and in full compliance with relevant requirements as specified in ISO 13680:2010，and is capable of well serving in high-CO₂and H₂S-containing environment due to its slight corrosion，i.e.，good corrosion resistance.