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How to choose stainless steel flange material?

Jun 05, 2019

How to choose stainless steel flange material?

High Quality Flange mainly used in food industry and surgical equipment, molybdenum is added to obtain a special structure of corrosion resistance. Compared with 304, it has better resistance to chloride corrosion, so it is also used as "Marine steel". SS316 is commonly used in nuclear fuel recovery facilities. Grade 18/10 stainless steels usually also meet this application level.

In order to save stainless steel material, use the form of welding ring. The sealing surface of this structure must be machined after welding ring and pipe. It is usually hung below the operating pressure of 2.5mpa. Smooth face welded flange, due to poor connection rigidity, poor sealing performance, so it is not suitable to use equipment with high air tightness requirements for toxic and inflammable and explosive media.

The connection plate of this structure is made of carbon steel or stainless steel. If it is made of carbon steel, the surface needs to be nickel-plated. The clamp material is cast aluminum ZL7.

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