Which manufacturing processes are used in seamless pipes?

Seamless pipes are manufactured using several different processes, each of which has its advantages and disadvantages. Here are some of the most common manufacturing processes used to produce seamless pipes:

Mandrel Mill Process: This process is one of the most popular methods for manufacturing seamless pipes. A solid steel billet is heated to a high temperature and then pierced with a mandrel to form a hollow shell. The shell is then rolled and stretched to the desired diameter and thickness.

Plug Mill Process: In this process, a solid steel billet is heated and then a plug is inserted into one end of the billet. The billet is then rolled and pierced by the plug to form a hollow shell. The shell is then rolled and stretched to the desired diameter and thickness.

Extrusion Process: In this process, a solid steel billet is heated and then forced through a die to form a hollow tube. The tube is then rolled and stretched to the desired diameter and thickness.

Continuous Casting Process: This process involves pouring molten steel into a mold, which is then cooled to form a solid billet. The billet is then reheated and pierced to form a hollow shell, which is then rolled and stretched to the desired diameter and thickness.

Each of these processes has its advantages and disadvantages, and the choice of process will depend on factors such as the material being used, the desired size and thickness of the pipe, and the application for which the pipe will be used.