Super Duplex Flanges Manufacturer in India

In high-performance industrial environments where extreme pressure, aggressive corrosion, and demanding mechanical conditions are common, the quality of flanges becomes critical. As a leading Super Duplex Flanges Manufacturer in India, CEBEX STEEL INDIA delivers precision-engineered flanges designed for superior strength, exceptional corrosion resistance, and long-term reliability.

We specialize in manufacturing and exporting Super Duplex Stainless Steel flanges, particularly UNS S32750 (2507) and UNS S32760, that meet stringent international standards. Our flanges are widely used in offshore platforms, desalination plants, chemical processing units, and marine systems where resistance to chloride stress corrosion cracking and pitting is essential.

Our advanced forging and CNC machining facilities ensure tight tolerances, excellent surface finish, and consistent performance across all flange types.

Super Duplex Flanges Manufacturer in India – UNS S32750 F53 ASME B16.5 Flanges by CEBEX STEEL INDIA

Why Choose Us as Your Super Duplex Flange Supplier?

Choosing the right supplier directly impacts operational safety and lifecycle cost. CEBEX STEEL INDIA offers ISO 9001:2015 & PED certified manufacturing with full traceability from raw material to finished flange. Our advanced in-house testing capabilities include PMI, ultrasonic testing, radiography, hardness, and tensile testing.

We maintain export expertise across Africa, Middle East, and Europe, with compliance to ASTM, ASME, EN, DIN, and global codes. Every flange is delivered with complete documentation including EN 10204 3.1/3.2 certification.

Product Overview & Key Features

Our Super Duplex flanges are engineered for high strength and excellent resistance to corrosion, particularly in chloride-rich environments.

Feature	Specification / Detail
Standards	ASTM A182, ASME SA182, ANSI B16.5, B16.47, EN, DIN
Grades	F51 (UNS S31803), F53 (UNS S32750), F55 (UNS S32760)
Pressure Ratings	Class 150 to 2500, PN6 to PN400
Size Range	½" NB to 48" NB
Flange Types	Weld Neck, Slip-On, Blind, Socket Weld, Threaded
Surface Finish	Machined, Anti-rust coated, Customized
Documentation	MTC EN 10204 3.1/3.2, NDT, PMI Reports

Types of Super Duplex Flanges We Manufacture

We manufacture a complete range of Super Duplex flanges designed for critical service applications. Custom flanges are manufactured based on drawings and project specifications.

Weld Neck Flanges – for high-pressure and temperature systems
Slip-On Flanges – easy installation, cost-effective
Blind Flanges – sealing pipeline ends
Socket Weld Flanges – for small diameter high-pressure lines
Threaded Flanges – no welding required
Lap Joint Flanges – used with stub ends
Spectacle Blind & Orifice Flanges – for flow control systems

Grades, Materials & International Standards

We supply Super Duplex flanges in globally recognized grades, all sourced from approved mills with full traceability.

Grade	UNS No.	Common Name	Applications	Standards
F51	S31803 / S32205	Duplex 2205	General industrial, chemical	ASTM A182 / ASME SA182
F53	S32750	Super Duplex 2507	Offshore, desalination, marine	ASTM A182 / ASME SA182
F55	S32760	Super Duplex Zeron 100	Oil & gas, subsea systems	ASTM A182 / ASME SA182

Chemical Composition & Mechanical Properties

Every Super Duplex flange is supplied with comprehensive test certificates ensuring full compliance with project specifications and international codes.

Chemical Composition (%)

Grade	Cr (%)	Ni (%)	Mo (%)	N (%)
S32750	24–26	6–8	3–5	0.24–0.32
S32760	24–26	6–8	3–4	0.20–0.30

Mechanical Properties

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Hardness (HB)
F53	800 min	550 min	310 max
F55	750 min	550 min	300 max

Super Duplex flanges offer twice the strength of standard austenitic stainless steels.

Dimensions, Sizes & Weight Chart

Manufactured as per ASME B16.5 / B16.47 standards. Custom machining and dimensions available.

Size (NB)	OD (mm)	Thickness (mm)	Bolt Circle (mm)
½"	89	11.2	60.3
1"	114	13.5	79.4
2"	152	17.5	120.7
4"	229	24.3	190.5
8"	343	30.2	298.5

Applications & Industries Served

Super Duplex flanges are widely used in industries requiring high corrosion resistance. Their resistance to chloride stress corrosion cracking and pitting makes them ideal for seawater applications.

Offshore Oil & Gas Platforms
Desalination Plants
Marine & Shipbuilding
Chemical Processing
Petrochemical Plants
Power Generation
Pulp & Paper Industry

Testing & Quality Assurance

Each Super Duplex flange undergoes PMI Testing, Ultrasonic Testing (UT), Radiography Testing (RT), Tensile & Hardness Testing, and Hydrostatic Testing.

All products are supplied with full inspection reports and EN 10204 3.1/3.2 certification.

Packing, Delivery & Export Capabilities

We ensure safe and secure delivery through wooden cases / pallets packing, anti-rust coating and marking, and complete export documentation.

We export to Africa, Middle East, Southeast Asia, and Europe with timely global shipping.

Exporting Super Duplex Flanges to Africa

As a leading Super Duplex Flanges Manufacturer in India, we supply high-quality flanges to major African markets including Nigeria, Egypt, Kenya, South Africa, and Ethiopia. Our export team ensures smooth logistics, proper certification, and timely delivery for EPC and industrial projects. To learn more about our specialized solutions for the continent, visit our Africa Super Duplex Flanges Exporter page.

Related Alloy Flanges – Stainless Steel, Duplex, Inconel, Hastelloy, Monel, Titanium, Copper Nickel, Alloy Steel

In addition to Super Duplex Flanges, we also manufacture and export Stainless Steel Flanges, Duplex Flanges, Inconel Flanges, Hastelloy Flanges, and Monel Flanges. These high-performance flanges are engineered for critical industrial environments requiring superior corrosion resistance, high strength, and reliable performance under extreme temperature and pressure conditions.

Our technical team ensures precise material selection and full compliance with international standards to meet your project requirements.

Browse our full range:

Why Choose CEBEX STEEL INDIA?

We deliver consistent quality, competitive pricing, and reliable global supply. Our engineering expertise ensures accurate material selection, compliance with international standards, and optimal performance for your project.

Frequently Asked Questions (FAQ)

What is Super Duplex 2507 flange?

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Super Duplex 2507 (UNS S32750) is a high-strength stainless steel flange with excellent corrosion resistance, especially in chloride-rich environments.

What standards do Super Duplex flanges follow?

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They comply with ASTM A182, ASME SA182, ANSI B16.5, B16.47, EN, and DIN standards.

Where are Super Duplex flanges used?

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They are widely used in offshore oil & gas, desalination plants, and marine applications.

Do you provide test certificates?

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Yes, all flanges come with EN 10204 3.1/3.2 certification and full inspection reports.

Can you manufacture custom flanges?

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Yes, we provide custom sizes, drilling, and machining as per drawings.

What is delivery time?

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Standard products are available ex-stock; custom orders take 2–4 weeks.