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Duplex Steel S31803 Flanges

Name: Duplex Steel S31803 Flanges
Brand: Skyland Metal & Alloys Inc.
Price: 500.0 INR
Availability: InStock

Price 500.0 INR/ Kilograms

Get a Price/Quote

MOQ : 1 Kilograms

Duplex Steel S31803 Flanges Specification

Product Form
Forged / Cast

Hardness
Max 290 HB

Size
ANSI/ASME/DIN standard sizes available

Recyclable
Yes

Diameter
Available from 1/2 to 48 or custom

Temper
Annealed / Pickled

Corrosion Resistant
Excellent, especially against pitting and crevice corrosion

Width
Custom as per requirement

Heat Resistance
Yes

Coating Type
Uncoated / Pickled Finish

Tensile Strength
600 - 850 MPa

Material Composition %
Approximately 22% Cr, 5-6% Ni, 3% Mo, balance Fe with N

Product Name
Duplex Steel S31803 Flanges

Steel Type
Duplex Stainless Steel

Steel Product Type
Flanges

Grade
S31803 / UNS S31803

Thickness
Custom, Standard thickness as per ASME/ANSI/DIN

Shape
Round, Square, Custom

Steel Standard
ASTM A182 / ASME SA182

Surface
Smooth, Machined, Pickled

Composition
Duplex Stainless Steel (Cr, Ni, Mo, N, Fe)

Application
Petrochemical, Chemical, Oil & Gas, Power Plants, Marine Industries

Dimension (L*W*H)
Custom as per specification

Weight
Varies as per size and design

Color
Metallic Silver

Material Grade
S31803

Finish Type
Machined/Polished

Usage
Pipe connections, pressure vessels, process equipment

Standards
ASTM, ASME, EN, DIN, JIS, BS

Weldability
Excellent

MOQ
As per customer requirement

Pressure Rating
Class 150, 300, 600, 900, 1500, 2500 lbs

End Connection
Weld Neck, Slip On, Blind, Socket Weld, Threaded, Lap Joint

Service Temperature
-50C to +300C (varies as per application)

Testing
Ultrasonic, PMI, Hardness, Hydrostatic, Visual Inspection

Manufacturing Process
Forged / Heat-treated

Machinability
Good

Impact Strength
High, with excellent ductility

Packaging
Wooden cases, pallets, or as per customer requirement

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

Duplex Steel S31803 Flanges Trade Information

Minimum Order Quantity
1 Kilograms

Delivery Time
7 Days

Duplex Steel S31803 Flanges About

Duplex Steel S31803 flanges are essential accessories in piping systems that are well appreciated due to their superior strength, corrosion resistance, and durability. These flanges are manufactured from duplex stainless steel, S31803, which combines ferrite and austenite. This composition endows certain mechanical and chemical characteristics that make S31803 flanges ideal for various industries.

Superior Corrosion Resistance

Duplex Steel S31803 Flanges are engineered for environments where pitting and crevice corrosion are concerns. Thanks to the alloy's balanced composition of chromium, nickel, molybdenum, and nitrogen, these flanges provide excellent resistance against various corrosive agents. This makes them especially suitable for marine applications, chemical processing, and offshore industries, where reliability and longevity are critical.

Comprehensive Testing and Quality Assurance

Every batch of Duplex Steel S31803 Flanges undergoes extensive testing, including ultrasonic, PMI, hardness, hydrostatic, and visual inspections. This rigorous process ensures that each flange meets stringent quality and safety standards required by international norms such as ASTM, ASME, and DIN. With customizable packaging options, product integrity is maintained throughout shipping and storage.

Versatile Application and Customization

These flanges are available in shapes such as round, square, or custom designs, and in diameters ranging from 1/2" to 48" or more. Offered with various pressure ratings and face types, they can be tailored to suit specific requirements across industries including petrochemical, oil & gas, power plants, and more. Custom dimensions and thicknesses ensure seamless integration into diverse piping systems.

FAQ's of Duplex Steel S31803 Flanges:

Q: How are Duplex Steel S31803 Flanges manufactured?

A: Duplex Steel S31803 Flanges are typically manufactured using forgings, followed by heat treatment processes to optimize their mechanical properties. Precision machining ensures a smooth, accurate finish, and strict adherence to standards such as ASTM A182 or ASME SA182 guarantees quality and performance.

Q: What benefits do Duplex Steel S31803 Flanges offer in industrial applications?

A: These flanges offer excellent corrosion resistance, high impact strength, and superior durability under extreme pressures and temperatures. Their excellent ductility and weldability make them ideal for use in aggressive environments typical of petrochemical, chemical, oil & gas, and marine industries.

Q: When should I choose a specific end connection type like Weld Neck or Slip On for Duplex Steel S31803 Flanges?

A: The selection of the end connection type depends on the application's pressure requirements, ease of installation, and maintenance. Weld Neck flanges are preferred for high-pressure, high-temperature applications, while Slip On and Threaded types are often used for lower pressure systems or where frequent disassembly is needed.

Q: Where can Duplex Steel S31803 Flanges be used?

A: These flanges are widely used in industries such as petrochemical plants, oil & gas refineries, power generation facilities, marine engineering, and chemical processing due to their robust mechanical properties and resistance to corrosion.

Q: What standard testing methods are applied to these flanges?

A: Duplex Steel S31803 Flanges undergo ultrasonic testing, Positive Material Identification (PMI), hardness, hydrostatic, and visual inspections to confirm compliance with specified standards. These tests assure structural integrity and material composition before delivery.

Q: How does the temperature range affect the performance of these flanges?

A: Duplex Steel S31803 Flanges can operate effectively between -50C and +300C, depending on the application and design specifics. This broad service temperature range ensures reliable performance in both cryogenic and moderately high-temperature environments.

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