Production process for simplifying T91 seamless steel pipe manufacturing process

The invention belongs to the technical field of seamless steel tube production, and discloses a production process for simplifying a T91 seamless steel tube manufacturing process, and the T91 seamless steel tube finished product is produced by adopting the manufacturing processes of heating by an inclined bottom heating furnace, cross piercing, tension reducing, annealing, cold rolling and heat treatment. According to the method, waste heat generated after steel pipe punching is used for conducting tension reducing on the steel pipe, the size of a tubular billet is reduced, the number of follow-up cold rolling times of the T91 seamless steel pipe and the intermediate annealing and pickling procedures are reduced, and waste acid emission is reduced; in addition, the roller speed distribution of the reducing mill is optimized, the roller speed of each rack of the reducing mill is reasonably distributed, the defect of uneven wall thickness is avoided, and the yield of T91 seamless tubes is improved. Energy consu