Wenzhou Licheng Steel Industry Co., Ltd. is a modern enterprise specializing in stainless steel pipes, pipe fittings and flange products. We have professional technical strength and advanced team management capabilities. Grades include: 304.304L.304H.321.321H.316.316L.317L.310S.347H and other pipe size range (6mm-580mm)*outer diameter (2mm-40mm)WT*4000-15000mm) length.
Stainless steel seamless elbows are pipe fittings used for pipe bends, and account for the largest proportion of pipe fittings used in piping systems, about 80%.
The forming process of stainless steel seamless elbow can be carried out by the following different methods:
【Forging method】
The end or part of the pipe is punched and stretched with a swaging machine to reduce the outer diameter. Commonly used swage forging machines include rotary type, connecting rod type, and roller type.
【Rolling method】
The core is placed inside the tube, and the outer circumference is pushed by rollers for round edge processing. Generally, no mandrel is used, and it is suitable for the inner round edge of thick-walled pipes.
【Stamping method】
Expand the tube end to the required size and shape with a tapered core on the punch.
【Inflation method】
1. Put rubber in the pipe, and compress it with a punch above, so that the stainless steel seamless elbow protrudes and forms.
2. Hydraulic bulging forming: Fill the middle of the tube with liquid, and the pressure of the liquid will bulge the tube into the desired shape. This method is mostly used in the production of bellows.
【Bending method】
1. Stretching method
2. Stamping method
3. Roller method: There are 3-4 rollers, 2 fixed rollers, and 1 adjusting roller for adjusting the roller distance. The finished pipe is bent.