What is the production method of medical stainless steel pipe fittings?

1, forging method: the end of the pipe or part of the forging machine to be stretched, so that the outer diameter is reduced, commonly used type forging machine has rotary, connecting rod type, roller type; 2. Rolling method: generally without mandrel, it is suitable for the inner circular edge of thick wall pipe; 3, roller method: the core is placed in the tube, and the roller is used for the round edge processing. 4, swelling method: one is to place rubber in the tube, above the punch compression, so that the tube protruding shape; Another method is hydraulic bulging, in which a liquid is filled in the middle of the pipe and the pressure of the liquid bulges the pipe into the desired shape. 5, stamping method: in the punch press with taper core to expand the pipe end to the required size and shape; 6, bending forming method: there are three methods more commonly used, one method is called stretching method, another method is called stamping method, the third roller method, there are 3-4 rollers, two fixed rollers, an adjustment roller, adjust the fixed roller distance, the finished pipe is bent.

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