We are Metinox Overseas, one of the best manufacturers of Duplex and Super Duplex Steel flanges in the Indian market, which produces accuracy engineered flanges to high performance piping systems. Over the last twenty years since we began operations in 2003; we have developed a history of excellence in our manufacturing, which is backed by an ISO certified system and a high level of quality control. Our flanges are of high quality, produced in Duplex steel, Super Duplex steel and high grade alloy materials, which are of global quality and performance standards.
Duplex and Super Duplex steel flanges that are made to all major international standards like ANSI B16.5, ASME B16.47, MSS-SP44, API, AWWA-C207, BS, and other world-wide accepted specifications are supplied in our manufacturing plant located in Mumbai. We offer Slip-On Flanges, Weld Neck Flanges, Blind Flanges, Threaded Flanges, Socket Weld Flanges and Lap Joint Flanges in classes of pressure between 150 LBS and 2500 LBS.
All ductile iron and Super duplex flange at Metinox Overseas are produced with close attention to supervision in high-quality raw material and high level of production technology that guarantee correct thickness, correct dimension and high level of mechanical strength. Our standard sizes, grades, and specifications give us high readiness stocks, which can be instantly and properly supplied in India or all over the world. Our Duplex and Super Duplex flanges have gained popularity in key sectors like oil and gas, petrochemical, power generation, chemical processing, marine engineering, desalination and water treatment, offshore projects and heavy engineering that has been brought about by our quality, competitive prices, technical expertise and delivery on time.
Table of Contents
- Duplex & Super Duplex Steel Flanges Specification
- Chemical Composition of Duplex & Super Duplex Steel Flanges
- Mechanical Properties of Duplex & Super Duplex Steel Flanges
- ASME SA182 Super Duplex Steel Flanges Equivalent Grades
- Types of Duplex & Super Duplex Steel Flanges
- Application and uses of Duplex & Super Duplex Steel Flanges
- Duplex & Super Duplex Steel Flanges Suppliers in India
- Countries We Export Duplex & Super Duplex Steel Flanges To
Duplex & Super Duplex Steel Flanges by Grade
Duplex & Super Duplex Steel Flanges Specification
Below is the detailed information on the super duplex steel flanges specification. For more information on these products, contact us.
| Specification | Details |
| Standard | ASTM A182 / ASME SA182 |
| Grade | UNS S32750, S32760, S32950, F51, F53, F55 |
| Size | 1/8" NB to 48" NB |
| Schedule | 5S, 10S, 10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160, XXS |
| Class | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Flange Face Type | Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
Chemical Composition of Duplex & Super Duplex Steel Flanges
The table below provides detailed information about the chemical composition of duplex and super duplex flanges.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S32750 | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 - 26.00 | 3.00 - 5.00 | 6.00 - 8.00 | 0.24 - 0.32 | 58.095 min |
| S32760 | 0.05 max | 1.00 max | 1.00 max | 0.030 max | 0.010 max | 24.00 - 26.00 | 3.00 - 4.00 | 6.00 - 8.00 | 0.20 - 0.30 | 57.61 min |
Mechanical Properties of Duplex & Super Duplex Steel Flanges
The mechanical properties is improatnt to know the tensile strength and other things about the material. So the table provides detailed information on the duplex and super duplex steel.
| Grades | Density (g/cm3) | Density (lb/in3) | Melting Point (-C) | Melting Point (-F) |
| S32750 / S32760 | 7.8 | 0.281 | 1350 | 2460 |
ASME SA182 Super Duplex Steel Flanges Equivalent Grades
The duplex steel and super duplex steel flanges are also made in different international grades. Some of the grades are given below.
| Standard | Werkstoff Nr. | UNS |
| Super Duplex S2507 | 1.4410 | S32750 / S32950 |
Types of Duplex & Super Duplex Steel Flanges
Metinox Overseas produces an entire category of Duplex and Super duplex steel flange products that support a wide variety of piping and connecting needs in challenging industrial applications. We have the following product portfolio:
Slip-On Flanges
Low to medium pressure applications Sliding, easy to install flanges that are welded both internally and externally.
Weld Neck Flanges
The flanges are high-strength with long tapered hub which are good in offering good stress distribution, great in high pressure and high temperature services.
Blind Flanges
Plug flanges that are solid and used to seal end of pipelines or valve openings to make sure that it is completely isolated and sealed.
Socket Weld Flanges
Equipped with a socket where the pipe is fitted and welded, providing very solid joints on the small diameter high-pressure piping systems.
Threaded Flanges
They consist of internally threaded flanges designed to be connected to the pipes without any welding, therefore being suitable in those areas where welding cannot be done.
Lap Joint Flanges
Utilized in stub ends to make it easier to align, assemble and disassemble the design, fit well in systems that needed maintenance.
Orifice Flanges
Flanges with a special design are applied in flow measurement processes that require accurate monitoring and control.
Long Weld Neck Flanges
Long neck flanges are intended to be used in special piping systems, high-pressure systems, and in critical process systems.
Application and uses of Duplex & Super Duplex Steel Flanges
Metinox Overseas Duplex and Super Duplex Steel Flanges are common with the critical piping connections in demanding industries, including oil and gas, offshore platforms, petrochemical refineries, power generation plants, desalination facilities, chemical processing units, water and wastewater treatment systems, marine and shipbuilding projects, fertilizer plants, pulp and paper mills, food and beverage processing, mining projects, infrastructure development, and heavy engineering projects, where high strength, excellent corrosion resistance, and high reliability are required; in these applications, extreme pressure, high temperature and corrosive environments.
Oil & Gas
Critical piping connections for offshore platforms and high-pressure transmission systems.
Petrochemical Refineries
High-strength flanges for corrosive chemical processing environments.
Power Generation Plants
Reliable connections for high-temperature and high-pressure power systems.
Desalination Facilities
Superior corrosion resistance for seawater processing systems.
Marine & Shipbuilding
Durable flanges for harsh marine environments and offshore construction.
Chemical Processing
High reliability in corrosive chemical handling and processing units.
Looking for High-Quality Duplex & Super Duplex Steel Flanges?
Choose Metinox Overseas - Your Reliable Duplex & Super Duplex Steel Flanges Manufacturer & Exporter.
Let us support your projects with quality, precision, and performance.
Duplex & Super Duplex Steel Flanges Suppliers in India
We provide Duplex & Super Duplex Steel Flanges in different cities of india and some of the popular ones are listed below.
| Bengaluru | Mumbai | Chennai | Hyderabad |
| Kolkata | Pune | New Delhi | Ahmedabad |
| Jaipur | Surat | Salem | Gandhinagar |
| Bhiwandi | Tiruppur | Sivakasi | Jamnagar |
| Thiruvananthapuram | Rajahmundry | Bhubaneswar | Vijayawada |
| Firozabad | Bokaro Steel City | Rajkot | Bharuch |
| Raipur | Cochin | Ludhiana | Panipat |
| Durgapur | Peenya | Pimpri-Chinchwad | Channapatna |
| Kharagpur | Nashik | Bareilly | Varanasi |
| Haldia | Rourkela | Moradabad | Indore |
| Visakhapatnam | Trivandrum | Pithampur | Dibrugarh |
| Angul | Gwalior | Coimbatore | Kannur |
| Nagpur | Vadodara | Rudrapur | Noida |
| Agra | Bhagalpur | Jamshedpur | Bhilai |
| Lucknow | Kanpur | Thane | Bhopal |
| Durg-Bhilai Nagar | Jabalpur | Ghaziabad |
Countries We Export Duplex & Super Duplex Steel Flanges To
At Metinox overseas, we export high-quality Duplex & Super Duplex Steel Flanges with international certification to over 30+ countries in the world, and some of them are listed below.
| Saudi Arabia | Oman | Kuwait | Bahrain |
| Qatar | UAE | Iran | Netherlands |
| Nigeria | Mexico | Canada | Bangladesh |
| United States | South Africa | Malaysia | Brazil |
| Singapore | Sri Lanka | Australia | Turkey |
| Venezuela | United Kingdom | Germany | New Zealand |
Enquire Now
Get pricing within 24 hours!
