Unicorn Metal Industries is a leading Duplex Steel Flanges Manufacturers in India,
offering high-performance flange solutions designed for corrosive and high-pressure environments.
Duplex Steel Flanges are widely preferred in industries where a combination of strength and
corrosion resistance is critical for long-term performance.
Our range includes slip-on, weld neck, blind, socket weld, and threaded Duplex Steel Flanges
manufactured as per ASTM, ASME, ANSI, and international standards. These Duplex Steel Flanges are
part of our industrial flanges manufacturers
range and are extensively used in offshore, marine, oil
& gas, and chemical processing industries. We also offer custom Duplex Steel Flanges based on
project specifications, ensuring reliability and precision.
Duplex Steel Flanges are specialized piping components used to connect pipes, valves, and equipment
in aggressive and high-stress environments. Known for their dual-phase microstructure, Duplex Steel
Flanges offer excellent strength along with superior resistance to corrosion, especially in
chloride-rich conditions.
One of the key advantages of Duplex Steel Flanges is their ability to resist stress corrosion
cracking while maintaining high mechanical strength. These Duplex Steel Flanges are suitable for
high-pressure and high-temperature applications. At Unicorn Metal Industries, Duplex Steel Flanges
are manufactured using advanced forging and machining processes to ensure consistent quality,
similar to high-performance solutions such as Inconel flanges and Hastelloy flanges used in critical industries.
| Specification | Details |
|---|---|
| Product | Duplex Steel Flanges |
| Size Range | 15 NB to 1200 NB |
| Pressure Rating | 150# to 2500# |
| Standards | ASTM A182 / ASME SA182 |
| Flange Standards | ANSI B16.5, B16.47, MSS, API |
| Types | Slip-On, Weld Neck, Blind, Socket Weld, Threaded |
| Face Types | RF, FF, RTJ |
| Finish | 2B, BA, Polished |
| Grade | Standard | Equivalent | Application |
|---|---|---|---|
| F44 | ASTM / ASME SA182 | S31254 | Chemical processing |
| F45 | ASTM / ASME SA182 | – | Specialized use |
| F51 | ASTM / ASME SA182 | S31803 | General industrial |
| F60 | ASTM / ASME SA182 | S32205 | Oil & gas |
| F53 | ASTM / ASME SA182 | S32750 | Offshore |
| F55 | ASTM / ASME SA182 | S32760 | Marine |
| F61 | ASTM / ASME SA182 | – | High strength |
| Element | Range |
|---|---|
| Chromium | 22–25% |
| Nickel | 4.5–6.5% |
| Molybdenum | 3–3.5% |
| Nitrogen | 0.1–0.3% |
| Property | Value | Unit | Importance |
|---|---|---|---|
| Tensile Strength | ≥620 | MPa | High load capacity |
| Yield Strength | ≥450 | MPa | Structural stability |
| Hardness | ≤290 | HB | Wear resistance |
| Elongation | ≥25 | % | Ductility |
We manufacture a comprehensive range of Duplex Steel Flanges designed for superior strength, corrosion resistance, and long service life in demanding industrial environments.
Duplex Steel Flanges are widely used in industries where corrosion resistance and mechanical
strength are essential. In offshore and marine environments, Duplex Steel Flanges are used in
structures exposed to seawater and chloride conditions.
They are also extensively used in oil & gas, chemical processing, desalination plants, and power
generation industries. Duplex Steel Flanges provide reliable performance in aggressive environments
where standard materials may fail.
Selecting the right manufacturer is crucial for Duplex Steel Flanges used in critical environments.
Unicorn Metal Industries ensures that Duplex Steel Flanges meet strict engineering and performance
standards.
Our manufacturing process emphasizes precision, traceability, and quality control. We also provide
custom Duplex Steel Flanges tailored to project requirements, ensuring durability, reliability, and
timely delivery.
At Unicorn Metal Industries, strict quality control procedures are followed to ensure the reliability of Duplex Steel Flanges. The process begins with raw material verification, followed by dimensional inspection and in-process quality checks during manufacturing. Mechanical testing is conducted to confirm strength and performance. Each flange undergoes final inspection before dispatch, ensuring compliance with international standards and consistent quality for industrial applications.
Explore our complete portfolio of industrial flanges manufactured for strength, corrosion resistance, and long-term performance.
If you are looking for reliable Duplex Steel Flanges Manufacturers in India, Unicorn Metal
Industries can meet your requirements. We supply high-quality Duplex Steel Flanges for industrial
applications.
Contact us today to request a quote or discuss your project requirements.
