Duplex Steel Buttweld Fittings are high-performance piping components known for their exceptional mechanical strength, superior corrosion resistance, and excellent resistance to stress corrosion cracking. These fittings combine the benefits of austenitic and ferritic stainless steels, making them ideal for severe service conditions.
Duplex Steel Buttweld Fittings are manufactured in seamless and welded construction and are widely used in oil & gas, chemical processing, marine, power generation, and offshore applications where durability and reliability are critical.
Duplex Steel Buttweld Fittings are available in standard duplex grades to suit various operating environments. The most commonly supplied grades include UNS S31803 and UNS S32205, offering excellent resistance to corrosion, high strength, and long service life.
Duplex Steel Buttweld Fittings Manufacturer in India | UNS S31803 & S32205 Supplier
Applications of Duplex Steel Buttweld Fittings
| ● Oil & Gas Industry and Offshore Platforms |
| ● Chemical & Petrochemical Processing Plants |
| ● Heat Exchangers, Pressure Vessels & Piping Systems |
| ● Marine, Seawater & Desalination Applications |
| ● Power Generation & Energy Sector |
| ● Pulp & Paper Industry |
Specification Table of Duplex Steel Buttweld Fittings
| Standard | ASTM A815 / ASME SA815 |
|---|---|
| Grades | UNS S31803, UNS S32205 |
| Size | 1/2″ NB to 48″ NB |
| Type | Seamless / Welded / Fabricated |
| Fitting Types | Elbow, Tee, Reducer, Cap, Stub End, Cross |
| Surface Finish | Pickled, Annealed, Polished |
Duplex Steel Buttweld Fittings Grades
| ● UNS S31803 – Standard duplex grade offering excellent corrosion resistance, high yield strength, and good weldability |
| ● UNS S32205 – Improved duplex grade with higher resistance to pitting, crevice corrosion, and stress corrosion cracking |
Mechanical Properties (Typical)
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation % |
|---|---|---|---|
| UNS S31803 | 450 | 620 | 25 |
| UNS S32205 | 450 | 620 | 25 |