Home > Duplex Steel > Duplex Steel S31803 Pipe
Duplex Steel S31803 Pipesare precision-manufactured from a particular grade of duplex stainless steel, recognized for its remarkable combination of austenitic and ferritic characteristics. This distinctive makeup grants the pipes outstanding strength and resistance to corrosion, rendering them a perfect selection for the challenging settings found in chemical processing, oil and gas operations, and marine engineering. Renowned for their durability, heightened tensile strength, and superior capacity to withstand pitting and crevice corrosion, Duplex Steel S31803 Pipes serve as a dependable answer for critical applications subjected to harsh conditions.
| Standard | ASTM A790 / ASME SA790 UNS S31803, S32205, S32550, S32750, S32760 |
| Materials | ASTM A815 – UNS S31803 |
| Size | 1/2″NB TO 12 “NB IN |
| Seamless Pipes & Tubes Sizes | 1/2” NB – 8” NB |
| Welded Pipes & Tubes Sizes | 6” NB – 24” NB |
| Thickness | 0.5-45mm |
| Outer Diameter | 6.0-630mm |
| Dimensions | OD(6.0-630)*WT(0.5-45)mm |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80 |
| Type | Welded / Fabricated / Seamless |
| Length | Single Random, Double Random & Cut Length. |
| Ni | Cr | Mo | Mn | Si | C | N | S | P | Fe | |
| MIN | 4.5 | 22.0 | 3.0 | – | – | – | 0.14 | – | – | – |
| MAX | 6.5 | 23.0 | 3.5 | 2.0 | 1.0 | 0.03 | 0.2 | 0.02 | 0.03 | Balance |
S31803 | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
At Koasteel, we take pride in being the largest supplier and manufacturer in the New Zealand, delivering advanced solutions for every one of your piping requirements. With cutting-edge production facilities strategically situated in the New Zealand, we hold an extensive inventory of more than 25,000 tons of top-quality materials kept ready in stock.
Reach out to us for a fast quote tailored to your requirement.
We supply These Duplex Steel S31803 Pipe conforming to DIN, ISO, JIS or ANSI Standard.
Corrosion resistance: Duplex steel S31803 pipe delivers outstanding corrosion resistance, particularly in settings with chlorides and sulfides present. Because of this resistance, they work well across many industries, such as chemical processing, oil and gas, and marine applications.
High strength: These pipes have greater strength than standard austenitic or ferritic stainless steel. As a result, they fit applications where strength and durability matter, like offshore platforms and structural components.
Excellent weldability: Duplex steel S31803 pipe offers superb weldability, which simplifies its manufacture and assembly. This characteristic matters greatly in projects that call for intricate structures and installations.
Superior toughness and ductility: Duplex steel merges the sought-after qualities of austenitic and ferritic stainless steels to achieve outstanding toughness and ductility. Because of this, it withstands brittle fracture even in low temperatures, guaranteeing dependability in demanding operating environments.
Cost: Even with their higher quality, duplex steel S31803 pipes provide a cost benefit compared to other corrosion-resistant alloys, like nickel-plated alloys. This makes them appealing choices for applications where cost efficiency is a priority.
Resistance to Stress Corrosion Cracking: Duplex steel S31803 pipes show strong resistance to stress corrosion cracking (SCC), a frequent problem in chloride-rich environments. This trait secures the pipe’s dependability and long service life under conditions of heightened degradation.
Duplex Steel S31803 Pipes are used across applications as varied as the industries they support, led mainly by the aerospace, railway, construction and automotive industries along with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
Chemical applications: These pipes serve the chemical industry, where chemical stability and resistance to high-temperature corrosion are needed. They are frequently applied in chemical processing plants, tanks, and water out-of-order systems.
Desalination equipment: Duplex steel S31803 pipe works well for on-site desalination of water from seawater. Their corrosion resistance matters in demanding marine environments.
Water Treatment:Duplex steel S31803 pipe serves water and chemical uses thanks to its resistance to corrosion and corrosion within water treatment plants
Heat Exchanger:Applied in heat exchanger systems that call for corrosion resistance, high efficiency, and thermal conductivity to achieve effective heat transfer
Application Requirements: Determine what the pipe will be used for – whether for general purposes, high-pressure or high-temperature zones, waste materials, or any particular industrial application. Duplex steel S31803 pipe is widely used in oil and gas, chemical processing, desalination and other applications thanks to its outstanding corrosion resistance and mechanical properties.
Materials: Duplex steel S31803 provides a blend of high strength and outstanding corrosion resistance. Assess its mechanical properties, including tensile strength, yield strength, corrosion resistance, and corrosion resistance across different environments, such as chloride-containing chemicals.
Size and Dimensions: According to your project specifications, covering thickness, wall thickness, and length, work out the necessary pipe size and diameter. Make sure the selected pipe dimensions comply with industry standards and regulations.
Operating conditions: Review operating conditions, covering temperature, pressure, and the nature of the liquid or gas expansion. Duplex steel S31803 pipe works well for both high temperatures and high pressures. Even so, it is important to confirm that the selected pipe can endure specific operating conditions without sacrificing performance or integrity.
Construction Standards: Confirm that duplex steel S31803 pipe satisfies relevant construction standards and specifications, such as ASTM A790 for seamless welded pipe or ASTM A928 for welded pipe.
Email: sales@koasteel.nz
