Duplex Steel UNS S31803 Buttweld Fittings
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
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Duplex Steel UNS S31803 is a type of duplex stainless steel that offers a unique combination of properties from both austenitic and ferritic stainless steels. Duplex Steel UNS S31803 buttweld fitting are designed and manufactured using this specific grade of Duplex steel. These fitting are crucial components in pipelines and systems that require resistance to corrosion, high pressure, and other challenging operating conditions.
Specification of Duplex Steel Buttweld Fitting
| Specifications | ASTM A815 / ASME SA815 |
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10 ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
| Size | Seamless Butt Weld Fitting : 1/2" - 10" | Welded Butt Weld Fitting : 1/2" - 48" |
| Schedule | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75 |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Type | Seamless / ERW / Welded / Fabricated |
| Thickness | 20 Swg., 18 Swg., 16 Swg., 14 Swg., 12 Swg., 10 Swg., & Sch. 10, Sch. 40, Sch. 80 etc. |
Features of duplex steel buttweld fitting
Corrosion Resistance: Duplex Steel UNS S31803 exhibits excellent corrosion resistance, particularly in aggressive environments such as those containing chlorides and acids. This property makes it a preferred choice for industries like chemical processing, oil and gas, and marine applications.
Strength and Toughness: The duplex microstructure imparts high strength and toughness to UNS S31803. This combination of properties allows these fittings to withstand high mechanical stress and pressure, making them suitable for use in pipelines handling fluids under varying conditions.
Fatigue Resistance: Duplex stainless steels, including UNS S31803, have good fatigue resistance, which is important in applications with cyclic loading or vibration, like offshore structures.
Economical Alternative: Duplex stainless steels provide an economical alternative to austenitic stainless steels and nickel alloys in certain application, as they offer a balance of performance and cost-effectiveness.
Weldability: While duplex stainless steels can be more challenging to weld compared to austenitic stainless steels, modern welding techniques and appropriate filler materials have made welding UNS S31803 feasible without significant issues.
Wide Range of Applications: Duplex Steel UNS S31803 butt weld fitting find applications in industries such as oil and gas exploration, chemical processing, pulp and paper production, desalination plants, water treatment, and more.
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