How Many Production Methods for Elbow Hose Fittings?

There are six common processing methods for elbow fittings, aluminium adapter, brass adapter, we are going to simply introduce you each main technologies.

1.Bulging methods: One way is placing rubber in the tube, compressing on the top of tube with a punch, to make the tube protruding and then forming into required hose fittings. Another method is the hydraulic bulging forming. Filling liquid into the middle part of a tube, the tube can bulge into required shape by the liquid pressure, this method is mostly used in the production of wave pipes.

2.Stamping method: Use a tapered core in the punch to expanse the end of pipe to get the required size and shape.

3.Roller method: Placing a mandrel in the tube, then pushing the outer surface with a roller, which is used for the round edge processing.

4. Rolling method: Generally do not have mandrel, suitable for inside round edge processing of thick-walled tubes.

5.Bending method: There are three methods are more commonly used, including extension method, stamping method, and roller method. For the roller method, there are 3-4 rollers, 2 fixed roller, and 1 adjustment roller to adjust fixed roller distance, the finished pipe is bending.

6. Forging method: make use the forging machine to stretch the end of the pipe or a part of the pipe to reduce the diameter of pipe fittings, commonly used forging machine includes rotary, connecting rod, and roller types.