Duplex Steel S31803 / S32205 Flanges(Sorf, Weldneck, Blind, Socketweld, Threaded)

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Duplex Steel S31803 / S32205 Flanges(Sorf, Weldneck, Blind, Socketweld, Threaded) Specification

Dimension (L*W*H)
As per Standard or Custom Requirement

Application
Oil & Gas, Petrochemical, Chemical, Power, Marine, Pulp & Paper, Offshore, Desalination, Engineering

Grade
UNS S31803 / S32205

Feature
Corrosion Resistant, High Strength, Excellent Weldability

Purity
99%

Product Type
Flanges (SORF, Weld Neck, Blind, Socket Weld, Threaded)

Material
Duplex Steel S31803 / S32205

Standard
ASTM A182 / ASME SA182, DIN, EN, JIS, ANSI, BS, GB

Shape
Round

Surface
Rust-Proof Oil, Polished, Smooth Finish

Connection
Welded, Threaded, Socket Welded, Slip On

Technics
Forged, Machined

Pressure
Class 150 to 2500 / PN6 to PN160

Size
1/2 to 48 (DN15 - DN1200)

Color
Silver / Metallic

Face Type
Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)

Standards Compliance
NACE MR0175, ISO 15156

End Type
Beveled, Plain

Yield Strength
450 MPa min

Tensile Strength
620 MPa min

Marking
According to Standard & Customer Requirement

Density
7.8 g/cm

Temperature Range
Up to 600C

Packaging
Wooden Cases, Pallets, Customized

Hardness
290 HB

About Duplex Steel S31803 / S32205 Flanges(Sorf, Weldneck, Blind, Socketweld, Threaded)

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Engineered for Strength and Reliability

Duplex Steel S31803 / S32205 flanges are forged and machined to offer strong, reliable connections in high-pressure systems. Their dual-phase microstructure combines the benefits of austenitic and ferritic steels, providing excellent resistance to stress corrosion cracking and offering high strength with minimum yield strength of 450 MPa and tensile strength of at least 620 MPa.

Versatile Applications and End Connections

These flanges are designed for versatile usage, available in welded, threaded, socket welded, and slip-on connections. Suitable for a wide range of industries, they serve critical roles in projects involving oil & gas, power generation, marine engineering, and desalination plants. Their compatibility with beveled and plain ends ensures seamless integration into various piping systems.

Comprehensive Standards and Quality Assurance

Manufactured in compliance with leading global standards-ASTM, ASME, DIN, EN, JIS, ANSI, and GB-these flanges also adhere to rigorous NACE MR0175 and ISO 15156 requirements for sour service. Each flange is marked according to standard or customer requirements, and supplied with a surface finish that resists rust, ensuring extended longevity and performance.

FAQ's of Duplex Steel S31803 / S32205 Flanges(Sorf, Weldneck, Blind, Socketweld, Threaded):

Q: How are Duplex Steel S31803 / S32205 flanges used in industrial applications?

A: These flanges are primarily used to connect pipes, valves, pumps, and other equipment to form robust piping systems. Their high strength, corrosion resistance, and weldability make them suitable for harsh environments in industries such as oil & gas, petrochemical, and marine engineering.

Q: What are the available types and face configurations of these flanges?

A: You can choose from SORF, weldneck, blind, socketweld, and threaded flanges. Face types include Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ), allowing flexibility to match specific sealing and strength requirements in diverse piping applications.

Q: When is it beneficial to use Duplex Steel S31803 / S32205 flanges over standard stainless steel?

A: Opting for Duplex Steel S31803 / S32205 is advantageous in environments with aggressive media, high pressure, or where stress corrosion cracking is a concern. Their dual-phase structure provides better performance compared to standard stainless steel in such demanding conditions.

Q: Where do these flanges comply with international standards, and why is this important?

A: These flanges comply with ASTM A182, ASME SA182, DIN, EN, JIS, ANSI, BS, and GB standards, ensuring global compatibility and quality. This compliance is crucial for meeting project specifications and regulatory requirements in various regions and industries.

Q: What is the process for manufacturing Duplex Steel S31803 / S32205 flanges?

A: The flanges are manufactured through a rigorous forging and machining process, followed by precision finishing such as polishing and rust-proof oil application. Each product undergoes marking and packaging according to customer and standard requirements to guarantee quality and traceability.

Q: How are these flanges packaged and delivered to ensure safe handling?

A: Packaging is done in wooden cases, pallets, or as specified by the customer. This helps protect the flanges from mechanical damage and corrosion during transit and storage, ensuring they arrive in optimal condition for installation.

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