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How Much Do You Know about the Manufacturing Methods of Stainless Steel Flanges

1. What is stainless steel flange


Stainless steel flanges are commonly used in the construction process of pipe fittings. Stainless steel flanges have superior performance with good temperature and pressure resistance. Also, stainless steel flanges enjoy excellent flexibility, and its product advantage is much stronger than plastic pipes. The stainless steel flange joint is easy to install, and it has good thermal conductivity, which make it suitable for the floor heating systems. The flange joint has excellent impact resistance and can be thermally welded and mechanically connected. And it is better than PB-PP-R in thermal conductivity.


2. How to manufacture stainless steel flange


How does our company WENZHPOU HUASHANG STEEL CO., LTD, China tube end reducer supplier,  manufacture stainless steel flange? The stainless steel flange joint is made of  the steel plate. After cutting the steel plate as needed, it is punched into a circle like UOE forming with a punching machine. After the steel is divided into two pieces, they will be divided and welded. After cutting the steel plate as required, it is punched into a circle like UOE forming by a punching machine. After the steel is cut into two, it is split and welded.


After punching, stainless steel flanges must be reshaped under thermal conditions. After shaping, the outer diameter and the wall thickness of the flange joint should be determined. Next, the finishing process is implemented. Sandblasting is used to remove the tin plating on the inner and outer surfaces of the flange joint, and the two ends are grooved to make welding easier. Moreover, stainless steel flanges can be shipped from the factory after inspection, stamping, painting, packaging and other processes.


There are also various processing methods of stainless steel flanges and most of theme should go

to the category of mechanical processing. Methods such as stamping, forging, roll forming, rolling, expansion, stretching, bending, and composite processing are commonly used ones.


(1) Rolling: The core is placed in the pipe, and the outer circumference is pressed by a roller for round edge processing.


(2) Roll forming: In generral, the mandrel is not used. The method is suitable for the inner edge of the thick-walled pipe.


(3) Expansion: Put a rubber into the hose, compress the upper part with a punching machine, and then protrude the hose into shape. Another method is hydraulic expansion forming, in which the center of the hose is filled with liquid and the pressure of the liquid is used to expand the hose into the desired shape. This method is generally used in the production of stainless steel flanges.


(4) Forging: A die forging machine is used to extrude the end or pne part of the pipe into the electric butterfly valve to reduce the outer diameter. The commonly used die forging machines are rotary type, connecting rod type and roller type.

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