Duplex Stainless Steel Forged Valves

Duplex Stainless Steel Forged Valves

Jul 05, 2024


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Duplex stainless steel forged valves play a crucial role in the industrial field, and their unique structure and performance make them popular in various applications. This article discusses the grades, structural characteristics, main advantages and applications of duplex stainless steel forged valves.
 

Duplex Stainless Steel Grades

In the industrial and engineering fields, duplex stainless steel forged valves have many grades, usually named according to international standards and the requirements of different manufacturers. The following are some common duplex stainless steel forged valve grades:
UNS S31803/S32205: This is a common duplex stainless steel with good corrosion resistance and mechanical properties, widely used in marine engineering, petrochemical, and energy fields.
SAF 2205: Duplex stainless steel developed by Sandvik has excellent corrosion resistance and high strength, suitable for manufacturing forged valves in high-pressure and high-temperature environments.
F51: This is a general name for duplex stainless steel, widely used in the manufacture of various valves, pipelines, and devices, especially in occasions requiring corrosion resistance and mechanical strength.
UR 2202: It is a high-quality duplex stainless steel with excellent weldability and corrosion resistance used for demanding marine and chemical applications.
LDX 2101: This duplex stainless steel combines excellent corrosion resistance with low cost, making it suitable for cost-sensitive industrial applications such as pharmaceutical and food processing.
These grades are widely used in valve manufacturing in various industrial fields according to their chemical composition, mechanical properties, and corrosion resistance, meeting the needs and requirements of different engineering projects.
 

Structural features

Duplex stainless steel forged valves are typically made from high-quality stainless steel and consist of valve bodies, valve bonnets, valve seats, valve stems, and valve cores. The valve body and valve bonnet are typically forged from duplex stainless steel, ensuring their strength and corrosion resistance. The valve seat and valve core are precision machined to ensure the best sealing performance.
 

Main advantages

Duplex stainless steel forged valves have excellent corrosion resistance, high strength and wear resistance, good sealing performance, strong impact and vibration resistance. Duplex stainless steel is composed of austenite and ferrite, with excellent corrosion resistance, making it especially suitable for long-term use in environments containing corrosive media such as chloride ions. The duplex structure gives it both good strength and excellent wear resistance, making it withstand complex working conditions under high pressure and high temperature. Precision-machined valve seats and valve cores, combined with the selection of high-quality materials, ensure that the valve is completely sealed in the closed state, effectively preventing leaks. Duplex stainless steel forged valves are suitable for occasions with complex working environments, frequent vibrations, and shocks, ensuring long-term stable operation of the valve.
 

Applications

Duplex stainless steel forged valves are widely used in various fields:
Petrochemicals: Duplex stainless steel forged valves are used in crude oil pipeline transportation, refinery equipment, and for controlling high-temperature and high-pressure mediums in chemical production.
Marine engineering: Due to severe seawater corrosion conditions, duplex stainless steel valves are used in submarine pipelines and offshore platforms.
Energy and power: Duplex stainless steel forged valves are used in the main pipelines and thermal transmission systems of thermal power stations to ensure the safety and efficiency of energy operations.
Shipbuilding: In shipbuilding, duplex stainless steel valves serve as control valves in marine hydraulic systems and seawater circulation systems.
 

Conclusion

Duplex stainless steel forged valves have become indispensable and important in the industrial sector due to their excellent corrosion resistance, high strength, good sealing performance, and broad application fields. In future engineering designs, selecting and applying duplex stainless steel forged valves correctly will strongly guarantee system reliability and safety.
 

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About the author
Teresa
Teresa
Teresa is a skilled author specializing in industrial technical articles with over eight years of experience. She has a deep understanding of manufacturing processes, material science, and technological advancements. Her work includes detailed analyses, process optimization techniques, and quality control methods that aim to enhance production efficiency and product quality across various industries. Teresa's articles are well-researched, clear, and informative, making complex industrial concepts accessible to professionals and stakeholders.

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Launched in 1988, Topper Forged Valve Company is engaged in manufacturing forged steel valves. Our products cover Forged Steel Ball Valve, Gate Valve, Check Valve, Globe Valve, According to API, BS, DIN, JIS GB Standards.
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