Handan Xinxing Special Tube Co., Ltd. Successfully Applies for a New Patent

On July 19, 2024, Handan Xinxing Special Tube Co., Ltd. successfully applied for a patent titled "A 17Cr Stainless Steel Seamless Steel Tube for Oil Well Exploitation and Its Preparation Method", with the application publication number CN118360550A, and the application date being April 19, 2024.

The invention discloses a 17Cr stainless steel seamless steel tube for oil well exploitation and its preparation method, which belongs to the field of seamless steel tube forming technology. The seamless steel tube of this invention optimizes the content of Cr, Ni, Mo in terms of cost, reducing raw material costs. At the same time, the preparation method provided by this invention is prepared through the processes of blank forming, blank forging, blank annealing, rough processing of the blank, fine processing of the blank, hot expanding holes, hot extrusion, heat treatment, and straightening; and a head pad is made, the small end of the bell mouth of the head pad is welded with one end of the blank, as the beginning of hole expansion and extrusion; also adjusting the various parameters of the extrusion mold to reduce extrusion. This invention improves surface quality, reduces cracks and folding defects, and increases the yield.