What are the common polishing treatment methods for sanitary pipe fittings?

1, sanitary pipe bending method: There are three methods are more commonly used, one method is called stretching method, the other method is called pressing method, the third roller method, there are 3-4 rollers, two fixed rollers, one adjustment Roller, adjust the fixed roll distance, the finished pipe is bent.

 
  2, sanitary grade stainless steel pipe bulging method: one is to place rubber in the pipe, the upper is compressed with a punch to make the pipe convex shape; the other method is hydraulic bulging, filling the middle of the pipe with liquid, liquid pressure to drum the pipe In the shape required, most of the production of bellows is used in this way.

  3. Forging method: The end or part of the pipe is punched out by a swaging machine to reduce the outer diameter of the sanitary stainless steel pipe. The common type forging machine has rotary type, connecting rod type and roller type.

  4. Stamping method: The sanitary stainless steel pipe end is expanded to the required size and shape with a tapered core on the punching machine.

 
  5, the roller method: the core is placed in the tube, and the outer circumference is pressed by the roller for the round edge processing.

 
  6, rolling method: generally do not use the mandrel, suitable for the inner edge of the thick-walled tube.