A material 12Cr1MoVg alloy tube. The main purpose is for the production of boiler steel structure, use temperature of 580 ℃, requires a higher temperature steel lasting strength, normalized and tempered steel to delivery. 12Cr1MoVg alloy tube is based on high-quality carbon structural steel, due to join one or more of the alloying elements used to improve the mechanical properties of steel, toughness and hardenability. With such a steel product, usually subject to heat treatment (normalizing or quenching); which is made of parts and components prior to use, usually subject to quenching or surface chemical treatment (carburizing, nitriding, etc.), surface hardening or induction hardening processing. Thus, according to the chemical composition (mainly carbon content), and the use of different heat treatment process, such steels can be divided roughly carburizing, quenching and nitriding steel three.