The invention relates to a non-oxidizing normalizing process of a steel
pipe. The non-oxidizing normalizing process of the steel
pipe is characterized by comprising the following steps of S1, pretreatment which comprises the following sub-steps of S11, preheating and heating; and S12, heat preserving, specifically, a conveying mechanism continues to convey the steel
pipe forwards to a heat preserving area, the heat preserving temperature is 850-900 DEG C, and the heat preserving time is 6-8 min; S2,
air cooling, specifically,
nitrogen is fed into an
air cooling area through a
nitrogen station,the
nitrogen is used as media, and used for fast cooling the steel pipe, and the steel pipe is cooled to 350-400 DEG C within the time of 1.5-2 min; S3,
water cooling, specifically, a
water cooling area is divided into three segments, the temperature rebounding of the steel pipe is 150-200 DEG C in the first segment of the
water cooling area, that is, the temperature of the steel pipe is made tobe 500-600 DEG ; and in the first segment of the water cooling area and the second segment of the water cooling area, the steel pipe is gradually cooled to be 200 DEG C or below; and S4, discharging out of a furnace,
air cooling is performed till a
room temperature is achieved. The invention further discloses a device used for the non-oxidizing normalizing process of the steel pipe. Due to the non-oxidizing normalizing process of the steel pipe, the
cooling speed is effectively controlled, the ideal
hardness, organization and surface quality are achieved, cost is lowered, and the on-time delivery rate is increased.