There are various types of seamless pipes for specialized purposes, such as seamless pipes for boilers, seamless pipes for geology, and seamless pipes for petroleum.

Seamless steel pipes can be divided into hot-rolled pipes, cold-rolled pipes, cold drawn pipes, extruded pipes, etc. according to different production methods.

Classified by appearance, there are circular pipes and irregular pipes. In addition to square and rectangular pipes, there are also elliptical pipes, semi-circular pipes, triangular pipes, hexagonal pipes, convex pipes, plum blossom pipes, etc.

According to the different materials, they are divided into ordinary carbon structural pipes, low-alloy structural pipes, carbon structural pipes, alloy structural pipes, stainless steel pipes, etc.

According to specific purposes, there are boiler pipes, geological pipes, petroleum pipes, etc.