What are the processing methods of pipe fittings? 

There are many processing methods for pipe fittings. Many also belong to the category of mechanical processing, the most used is stamping, forging, roller processing, rolling, bulging, stretching, bending, and combination processing. Pipe processing is an organic combination of machining and metal pressure processing.
Examples are given below:
Forging method: forging machine will be the end of the pipe or part of the stretch to reduce the outside diameter, commonly used forging machine rotary, connecting rod, roller.
Stamping method: The end of the pipe is expanded to the required size and shape with a taper core in a punch press.
Roller method: The core is placed in the tube and the periphery is pushed and pressed by rollers, which is used for the processing of round edges.
Rolling method: generally do not use mandrel, suitable for thick wall pipe inner edge.
Bending: There are three common methods, one method is called stretch method, Another method called stamping method, the third is more familiar with the roller method, there are 3-4 rollers, two fixed rollers, an adjustment roller, adjust the fixed roller distance, finished pipe is bent. This method is widely used, if the production of spiral tube, curvature can also be increased.
Bulging law: a rubber is placed in the tube, the top of the punch compression, the tube bulge forming; Another method is hydraulic bulging, in the middle of the tube filled with liquid, liquid pressure to the tube into the desired shape, as we often use the production of corrugated pipe is most of this method.
In short, the pipe fittings are widely used and various. Japan’s production methods are licensed, some pipe production methods and processes have declared a patent, pipe many patents, mostly combination processing. China’s pipe processing gap is very large, for example: the bicycle used in the three and four, in foreign countries as early as four or five years on the use of bulging tube head, and our manufacturers may still be using welding methods. People hardly know such things, it is difficult to accept new things, even if there is, manufacturers are not necessarily willing to change the process. In China, cast iron drainage pipes and other pipe fittings developed very slowly, relatively backward.
Stainless steel pipe fittings belong to a kind of pipe fittings, it is made of stainless steel material so called stainless steel pipes, it includes: stainless steel elbow. There are four types of stainless steel pipe, stainless steel three-way, stainless stainless steel reducing pipe and stainless steel cap, according to the connection method, they are socket pipe, threaded pipe, flanged pipe and welded pipe.
Stainless steel pipe fitting is a new kind of pipe fitting which is widely used. There are many ways to process it.

  1. Stainless steel pipe fittings can be used by forging. Part of the pipe can be stretched, thus reducing the outer diameter.
  2. Stainless steel pipe fittings can be used by using roller method. The stainless steel tube can be put in the core, the outside can be pressed with a roller to push the edge of the processing.
  3. Stainless steel pipe fittings can be used by stamping, by tapering the core and then punching the end of the pipe to the desired size and shape.