What should we pay attention to when making stainless steel reducers?

　　Diameter enlargement is formed by using a blank smaller than the diameter of the large end of the pipe with an internal punching die along the inner diameter of the tube blank. The expanding process mainly solves the problem that it is not easy for the A403 Bw Seamless Ss321 Pipe Concentric Stainless Steel Reducer to be formed by reducing. Sometimes, according to the need of material and product forming, the methods of expanding and reducing are combined.

　　In the process of reducing or expanding deformation and pressing, cold or hot pressing is adopted according to different materials and changing sizes. Usually, cold pressing should be used as far as possible, but hot pressing should be used for severe work hardening caused by multiple diameter changes, thick wall or alloy steel materials.

　　In addition to using steel pipe as raw material to produce stainless steel reducers, some specifications of stainless steel reducers can also be produced by stamping process of steel plate. The die used for drawing is designed according to the dimension of inner surface of stainless steel reducers, and the steel plate after cutting is stamped and stretched by the die.