Stainless steel flange material how to choose-Goodwill Valve Fittings

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Stainless steel flange material how to choose

Release Date：

25 Jul,2023

Mainly used in the food industry and surgical equipment, the addition of molybdenum gives it a special structure that resists corrosion. It is also used as a "marine steel" due to its better resistance to chloride corrosion than 304, while SS316 is commonly used in nuclear fuel recovery plants. 18/10 grade stainless steel is usually also available in this application class.
In order to save stainless steel material, welded rings are used. The sealing surface must be machined after the ring has been welded to the receiver. Generally used to hang at an operating pressure of 2.5 MPa or less. Smooth surface flat welding flange, due to the connection rigidity is poor, sealing performance is not good, so the toxic and flammable and explosive media gas tightness requirements of high equipment should not be used.
This structure of the connection disk material using carbon steel or stainless steel, if carbon steel, the surface needs to be nickel-plated, clamp material using cast aluminum ZL7. Connection disk sealing roughness of 20, and there shall be no obvious radial grooves and scoring. The specific structure can be seen in GB4982-85.

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