Precision steel pipes are typically produced on automatic pipe rolling mills. Solid billets are inspected, surface defects are removed, cut to the required length, centered on the billet piercing end face, then sent to the heating furnace for heating, and pierced on the piercing machine. As the piercing takes place, the billet continuously rotates and advances, gradually forming a hollow cavity internally under the action of the rolling rolls and mandrel, known as the rough pipe. It is then sent to the automatic pipe rolling mill for further rolling. Subsequently, it passes through a sizing machine to even out the wall thickness and a sizing machine to achieve the specified diameter. Using a continuous pipe rolling mill to produce hot-rolled seamless steel pipes is a more advanced method.

To obtain smaller-sized and higher-quality seamless tubes, cold rolling, cold drawing, or a combination of both methods must be employed. Cold rolling is typically carried out on a two-roll mill, where the steel tube is rolled in a circular die with a variable cross-section and a stationary conical mandrel. Cold drawing is usually performed on single-chain or double-chain cold drawing machines with a force range of 0.5 to 100T.

The extrusion method involves placing the heated billet into a closed extrusion cylinder, where a piercing rod and extrusion rod move together to extrude the material through a smaller die hole. This method is suitable for producing small-diameter steel pipes.