Stainless steel flange process explanation:

Roller method: The core check valve is placed inside the tube and pressed by the roller for the edge processing.

Rolling method: Generally, the mandrel is not used, and it is suitable for the inner edge of the thick-walled tube.

Bulging method: one is to place rubber in the tube, and the upper part is compressed by a punch to make the tube convexly formed; the other method is to form a hydraulic bulge, fill the middle of the tube with liquid, and drum the tube into the desired shape by liquid pressure. Most of the production of bellows like ours is used in this way.

Forging method: The end of the pipe is partially or partially stretched by a swaging machine to reduce the outer diameter. The common forging machine has a rotary type, a link type and a roller type.