Stainless steel pipe fittings are parts that connect pipes into pipelines. According to the connection method of stainless steel pipe fittings, they can be divided into four types: socket pipe fittings, threaded pipe fittings, flange pipe fittings and welded pipe fittings. Stainless steel pipe fittings are also a kind of pipe fittings. Because they are made of stainless steel, they are called stainless steel pipe fittings. Stainless steel pipe fittings include stainless steel elbows, stainless steel tees, stainless steel crosses, stainless steel reducers, stainless steel caps, etc. According to the connection method, it can be divided into four categories: socket stainless steel pipe fittings, threaded stainless steel pipe fittings, flanged stainless steel pipe fittings and welded stainless steel pipe fittings.
1. Forging method
The end or part of the pipe is punched with a swaging machine to reduce the outer diameter. Common swaging machines include rotary, connecting rod, and roller types.
2. Roller method
A core is placed in the stainless steel pipe, and the outside is pushed by a roller to process the round edge.
3. Stamping method
On the punch press, use a tapered core to expand the tube end to the desired size and shape.
4. Bending method
There are three commonly used methods, one is called the stretching method, the other is called the stamping method, and the third is the roller method. There are 3-4 rollers, two fixed rollers, one adjusting roller, adjusting the fixed roller pitch, and finished pipe fittings. It's curved.
5. Rolling method
Generally, the mandrel is not used, and it is suitable for the inner round edge of thick-walled pipe.
6. Bulging method
Put rubber in the tube and compress it with a punch above to make the tube protrude into shape; another method is hydraulic bulging, filling the middle of the tube with liquid, and the liquid pressure bulges the tube into the required shape. Most of the production of bellows This method is used.
