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Duplex Valve
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Duplex Valve

Special Alloy Valve

Valve Type

Duplex Valves:Ball Valves / Butterfly Valves/ Gate Valves / Globe Valves/ Check Valves / Plug Valves/ Control Valves and Customized Valves.


Material

Duplex S31803 / Super Duplex S32750 / Super Duplex S32760

1A / 2A / 3A / 4A / 5A / 6A / 1B / 1C

CD4MCU / CD4MCUN / CD3MCUN / CE8MN / CD6MN / CD3MN / CE3MN / CD3MWCuN

F51、F53、F55、F60


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Description

Duplex stainless steel is a stainless steel in which the ferrite phase and austenite phase each account for half of the solid quenching structure, and the minimum phase content is generally 30%. Duplex stainless steel is formed on the basis of 18-8 austenitic stainless steel by increasing the Cr content or adding other ferrite elements. It not only has a two-way structure of austenite and ferrite, but also saves N; alloy. Due to the characteristics of the two-phase structure of duplex stainless steel, through the correct control of chemical composition and heat treatment process, duplex stainless steel can have the advantages of both ferritic stainless steel and austenitic stainless steel. Due to the presence of austenite, duplex stainless steel reduces the brittleness of high C ferrite and the tendency of crystal growth, while maintaining excellent toughness and welding performance; and the presence of ferrite improves the yield strength, resistance to intergranular corrosion and resistance to chloride stress corrosion of austenite.


Duplex stainless steel valves are widely used in oil and gas, chemical, marine engineering, paper industry, food processing and medical equipment due to their high strength, excellent corrosion resistance and good mechanical properties.

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