API 5L X52N seamless pipe is generally produced by automatic pipe rolling mill. After checking and removing the surface defects, the solid pipe blank is cut into the required length, heated to the heating furnace with the end face of the piercing end of the pipe blank as the center, and perforated on the piercing machine. At the same time, the perforation continues to rotate forward. Under the action of the cylinder and the plug, a cavity is formed inside the pipe blank, which is called capillary pipe. Then it is sent to the automatic pipe rolling mill to continue rolling. When the whole machine is full, the diameter of the slurry is fixed by the sizing machine to meet the specification requirements of API 5L X52N seamless pipe. It is an advanced method to produce seamless steel pipe by continuous rolling mill.

In order to obtain smaller size and better quality API 5L X52N seamless pipe, cold rolling, cold drawing or combination of the two must be used. Cold rolling is usually carried out on two rolling mills, and the steel pipe is rolled in the annular channel formed by variable cross-section round hole and fixed cone plug. Cold drawing is generally carried out on 0.5 - 100t single chain or double chain cold drawing machine. The extrusion pipe will be placed in a closed extrusion barrel, and the perforated rod will move with the extrusion rod to extrude the extruded part from the smaller die hole. This method can produce smaller diameter steel pipe.