Reduced Sockets (odd-sized pipes) are a type of piping fitting used for varying pipe diameters. The commonly used forming processes include reduction and extrusion, reduction followed by extrusion, or both reduction and extrusion for certain sizes of odd-sized pipes.

Contraction/Expansion Forming

The reduction forming process for male and female ends involves placing a billet with a diameter equal to the male end of the male and female end into a forming mold, then compressing it along the axial direction of the billet to cause the metal to move and contract within the mold cavity. Depending on the size of the diameter change of the eccentric pipe, it is divided into single-stage forming or multi-stage forming.

b. Stamping & Shaping

In addition to producing elbows using steel pipes as raw materials, elbows of certain specifications can also be manufactured using steel plates through the stamping forming process. The shape of the punch mold used for stretching is designed according to the inner surface dimensions of the elbows, and the steel plate after cutting is stamped and stretched into shape using the punch mold.