Super Duplex Steel Flanges are high-alloy stainless steel flanges engineered for extreme corrosion resistance and very high mechanical strength. These flanges offer exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in highly aggressive and chloride-rich environments.
Super Duplex Steel Flanges are widely used in high-pressure piping systems, offshore platforms, oil & gas pipelines, chemical processing plants, and marine applications where long service life and superior performance are essential.
Super Duplex Steel Flanges are available in premium super duplex grades to meet severe service conditions. The most commonly supplied grades include Super Duplex S32750 (UNS S32750) and Super Duplex S32760 (UNS S32760), offering high PREN values, outstanding strength, and excellent resistance to seawater corrosion.
Super Duplex Steel Flange Manufacturer in India | UNS S32750 & S32760 Flange Supplier
Applications of Super Duplex Steel Flanges
| ● Offshore Oil & Gas Platforms |
| ● Subsea Pipelines & Seawater Systems |
| ● Chemical & Petrochemical Processing Plants |
| ● Desalination & Reverse Osmosis Plants |
| ● Power Generation & Pressure Piping |
| ● Marine & Shipbuilding Industries |
Specification Table of Super Duplex Steel Flanges
| Standard | ASTM A182 / ASME SA182 |
|---|---|
| Grades | Super Duplex F53 (S32750), F55 (S32760) |
| Pressure Class | 150, 300, 600, 900, 1500, 2500 |
| Flange Types | Weld Neck, Slip On, Blind, Socket Weld, Threaded, Lap Joint |
| Size Range | ½″ NB to 48″ NB |
| Standards | ASME B16.5, ASME B16.47 Series A & B |
| Surface Finish | Annealed, Pickled, Machined, Polished |
Super Duplex Steel Flange Grades (Sub-Products)
| ● Super Duplex S32750 (F53) – Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking |
| ● Super Duplex S32760 (F55) – Higher PREN value with superior performance in seawater and aggressive chloride environments |
Mechanical Properties of Super Duplex Steel Flanges (Typical)
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation % |
|---|---|---|---|
| Super Duplex S32750 | 550 | 800 | 25 |
| Super Duplex S32760 | 550 | 800 | 25 |