Super Duplex Steel Flanges are vital components in piping systems used in various industries, including oil and gas, petrochemical, chemical processing, and marine applications. These flanges are made from super duplex stainless steel, a material renowned for its exceptional corrosion resistance, high strength, and excellent mechanical properties.
Specifications and Uses of Super Duplex Steel Flanges:
Super Duplex Steel Flanges come in various sizes, pressure ratings, and types to suit different applications. They are typically used to connect pipes, valves, and other equipment in pipelines where resistance to corrosion, high pressure, and temperature fluctuations is crucial. These flanges are employed in critical environments where standard stainless steel or carbon steel flanges may fail due to corrosion or stress.

Manufacturing Process Of Super Duplex Flanges
Raw Material
The system controls inspect the raw material quality at the first stage in accordance with the test certificate as well as dimensions and appearance.
Material Cutting
This method of making flanges involves cutting stripes from the center plate and rolling them into a circle.
Forging
Compared to cast flanges, forged flanges typically contain less carbon and are less likely to corrode. Temperature control, weight measurement, and material grade checking are used in forgings.
Heat Treatment
The total forging cooling speed is the slowest throughout this heat treatment procedure; the standardizing and decreasing cooling speeds are faster.
Final Inspection
Measure and check the flange's dimensions and size using this procedure.
Advantages of Super Duplex Steel Flanges:
Corrosion Resistance: Super Duplex Steel Flanges exhibit superior corrosion resistance compared to standard duplex or austenitic stainless steels. They are resistant to a wide range of corrosive environments, including chloride-rich environments, acidic solutions, and seawater.
High Strength: These flanges offer high mechanical strength, allowing them to withstand high pressures and loads without deformation or failure. This property makes them suitable for demanding applications in heavy industries.
Excellent Weldability: Super Duplex Steel Flanges can be easily welded using conventional welding techniques without significant loss of properties. This facilitates easy fabrication and installation, reducing overall project costs and time.
Good Fatigue Resistance: They demonstrate excellent fatigue resistance, ensuring long-term reliability in dynamic applications subjected to cyclic loading.
Cost-Effective Solution: Despite their superior properties, super duplex steel flanges offer a cost-effective solution due to their extended service life and low maintenance requirements, reducing downtime and replacement costs.
Types of Super Duplex Steel Flanges:
Weld Neck Flanges: These flanges feature a long tapered hub that provides reinforcement
and supports the pipe, making them suitable for high-pressure applications.
Slip-On Flanges: Slip-On Flanges are easy to install and are used in low-pressure
applications where alignment of the pipe is not critical.
Blind Flanges: Blind Flanges are used to close the end of a piping system and are commonly
used in applications where the pipe needs to be sealed.
Socket Weld Flanges: These flanges have a socket-like design to accommodate the pipe and
are welded for a robust connection, suitable for high-pressure applications.
Grades and Materials Used in Super Duplex Steel Flanges:
The most commonly used grades of super duplex stainless steel for flanges include:
ASTM A182 F53 (UNS S32750): This grade offers excellent corrosion
resistance and high mechanical strength, making it suitable for demanding applications in
aggressive environments.
ASTM A182 F55 (UNS S32760): F55 provides enhanced resistance to pitting
and crevice corrosion, along with improved mechanical properties, making it ideal for
critical applications in harsh conditions.
Chemical Composition of Super Duplex Steel Flanges:
The chemical composition of super duplex stainless steel typically includes high levels of chromium, molybdenum, and nitrogen, along with a balanced amount of nickel and other alloying elements. The composition may vary slightly depending on the specific grade and manufacturer, but a typical composition is as follows:
- Chromium (Cr): 24-26%
- Nickel (Ni): 6-8%
- Molybdenum (Mo): 3-5%
- Nitrogen (N): 0.2-0.3%
- Iron (Fe): Balance
Super Duplex Steel Flanges Mechanical Properties:
Super Duplex Steel Flanges exhibit excellent mechanical properties, including:
- Tensile Strength: ≥ 800 MPa
- Yield Strength (0.2% offset): ≥ 550 MPa
- Elongation: ≥ 15%
- Hardness (Brinell): ≤ 270 HB
Why Choose Calico Metal Alloys LLP?
Choosing Calico Metal Alloy Pvt Ltd as your supplier and exporter of Super Duplex Steel Flanges ensures unmatched quality, reliability, and customer satisfaction. With a commitment to excellence, we guarantee that all our products meet stringent quality standards. Our extensive range of Super Duplex Steel Flanges, coupled with customization options, ensures that we can fulfill diverse industrial requirements. Competitive pricing, timely delivery, and exceptional customer service further set us apart. Trust Calico Metal Alloy Pvt Ltd for superior products and seamless procurement experiences.
Super Duplex Steel Flanges Specifications
Standard | ASTM A182 / ASME SA182 |
Dimensions | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
Flange Size Chart | 1/2" (15 NB) to 48" (1200NB), DN10~DN5000 |
Pressure Rating | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
JIS | 16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K |
Flange Connection / Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove, Flange Pipe. |
Origin | West Europe / Japan / Indian / USA / Korean |
Types of Flanges | Threaded / Screwed / Forged / Plate |
Coating | Yellow Transparent, Zinc Plated, Anti-rust Paint, Oil Black Paint, Cold and Hot Dip Galvanized |
Test Of Flange | Direct-reading Spectrograph, Ultrasonic flaw detector, Magnetic particle detector, X-ray detector, Hydrostatic testing machine. |
Production technique Used | Heat treated, Forged and Machined |
Equipment | Press machine, Bending machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc. |
Test Certificates | EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report, etc |
Types Of Super Duplex Stainless Steel Flanges
Super Duplex Steel Weld Neck Flange

Super Duplex Steel Blind Flange

Super Duplex Steel Slip on Flange

Super Duplex Steel Socket weld Flange

Super Duplex Steel Spectacle Blind Flange

Super Duplex Steel Threaded Flange

Other Types Of Super Duplex Steel Flanges
SDSS Flanges | Super Duplex Steel Lap Joint Flange |
Super Duplex Steel Long Weld Neck Flange | Super Duplex Steel Industrial Flanges |
Super Duplex Steel Forged Flanges | Super Duplex Steel RTJ Flange |
Super Duplex Stainless Steel Plate Flange | Square Flange |
F51 Super Duplex Stainless Steel Flanges | Super Duplex Stainless Steel F51 SORF Flange |
SDSS WNRF Flange | Super Duplex Steel SWRF Flanges |
ASME SA182 Super Duplex Steel Pipe Flanges | ASTM A182 Super Duplex Steel Plate Flange |
Super Duplex Stainless Steel Flat Face Flange | Super Duplex Steel BS 4504 Flanges |
Super Duplex Steel Orifice Flange | Super Duplex Steel Groove & Tongue Flanges |
ANSI B16.5 Super Duplex Steel Flanges | Super Duplex Steel Loose Flange |
Super Duplex Flanges Industrial Application

Electrical

Automotive

Construction

Defence

Pharmaceutical

Petroleum

Petrochemical

Milk & Dairy
Export & Supply Destinations Of Super Duplex Flanges
Liechtenstein, Spain, Belarus, Serbia, France, Finland, Bulgaria, Sweden, Latvia, Moldova, Monaco, Azerbaijan, Czechia/Czech Republic, Luxembourg, Belgium, Italy, Austria, Slovakia, Hungary, Greece, Romania, Switzerland, Germany, Turkey, Portugal, Russia, Ireland, Denmark, Lithuania, United Kingdom, Cyprus, Norway, Estonia, Poland, Ukraine, Malta, Croatia, Netherlands.
Sri Lanka, Kuwait, Indonesia, Japan, Taiwan, Israel, Philippines, Myanmar, Macau, Bangladesh, Singapore, Lebanon, Saudi Arabia, Afghanistan, Hong Kong, Iraq, Armenia, Mongolia, Egypt, Qatar, Bhutan, Thailand, Turkey, Bahrain, Maldives, British, North Korea, Nepal, United Arab Emirates, Iran, Kyrgyzstan, South Korea, Malaysia, Azerbaijan, Oman, Vietnam, India, Jordan, China, Russia.
Angola, Liberia, Mauritius, Libya, Mauritania, Eswatini, Mozambique, Namibia, Senegal, Niger, Zambia, Zimbabwe, Tunisia, Central African Republic, Gambia, Kenya, Uganda, Nigeria, Burkina Faso, Morocco, Ethiopia, South Africa, Egypt, Tanzania, Algeria, Madagascar, Rwanda, Botswana, Burundi, Seychelles, Cameroon.
El Salvador, Jamaica, Antigua and Barbuda, Belize, Dominican Republic, Canada, Panama, Costa Rica, Barbados, Bahamas, Haiti, United States of America, Grenada, Honduras, Cuba, Guatemala, Saint Lucia, Saint Vincent and the Grenadines, Nicaragua, Dominica, Trinidad and Tobago, Mexico.
Paraguay, Colombia, Guyana, Suriname, Ecuador, Bolivia, Venezuela, Brazil, Peru, Argentina, Chile, Uruguay.