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Duplex Steel S31803 Forged Fittingsare robust components engineered for tough industrial uses such as oil and gas, petrochemicals, and power generation. Made from alloy steel, they offer outstanding strength, durability, and resistance to corrosion and high temperatures. These fittings, including elbows, tees, and couplings, are essential for ensuring dependable connections and structural integrity in high-pressure settings. Thanks to their sturdy build and performance, alloy steel forged fittings are a dependable option for critical operations across a range of industries.
| Size | : | 1/2″NB TO 4″NB IN |
| Standard | : | ASTM A182 / ASME SA182 |
| Dimensions | : | ANSI/ASME B16.11 & BS3799, etc. |
| Grade | : | UNS S31803, S32205, S2205, S32550, S32750, S32760. |
| Class | : | 2000LBS, 3000LBS, 6000LBS, 9000LBS, etc. |
| Grade | S31803 |
| Density (g/cm 3) | 7.805 |
| Density (lb/in 3) | 0.285 |
| Melting Point (°C) | 1420 – 1465 |
| Melting Point (°F) | 2588 – 2669; |
| UNS S31803 | 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 |
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 plants strategically situated in the New Zealand, we maintain 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 Forged Fittings in accordance with DIN, ISO, JIS or ANSI Standard.
Corrosion Resistance: Duplex steel S31803 mesh fittings show outstanding resistance to corrosion, particularly in aggressive environments containing chloride ions, like marine and chemical operations. This resistance helps extend the fitting’s service life.
Strength: These fillings possess greater strength than austenitic stainless steel, making them well-suited for applications demanding high mechanical strength, such as in high-pressure pipelines
Duplex structure: Duplex stainless steels feature a two-dimensional microstructure made up of austenite and ferrite phases. This duplex arrangement delivers high strength along with enhanced resistance to stress corrosion cracking, fatigue and erosion.
Excellent weldability: S31803 mesh fittings can generally be welded using standard welding methods, boosting their flexibility in manufacturing and installation processes.
Cost Effectiveness: While duplex stainless steel is usually pricier than austenitic stainless steel, it provides a cost-effective option for applications requiring high corrosion resistance and mechanical properties, which justifies the upfront investment through its durability and lower maintenance costs.
Duplex Steel S32205 Forged Fittings serve applications as varied as the industries that rely on them, led chiefly 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.
Oil and Gas Industry: Duplex steel grid fittings are widely applied in areas such as pipelines, offshore platforms and processing equipment within the oil and gas sector because of their ability to withstand corrosive environments, their high strength and their good weldability. used extensively
Chemical agents: These fillers serve pharmaceutical production plants for managing chemical degradation and control. Because they resist pitting and Travis corrosion, they are well suited to demanding chemical settings.
Petrochemical Industry: In the petrochemical field, duplex steel grid fittings serve numerous purposes such as reactors, heat exchangers, storage tanks and more. Their strong resistance to stress corrosion cracking together with high thermal conductivity prove beneficial in these uses.
Power Plant: Power plants rely on duplex steel mesh fittings for parts like heat exchangers, boilers, corrosion-resistant pipes and drip lines that are essential for long-term performance
Water Treatment Systems: In water treatment systems, duplex steel inserts are applied in piping networks, valves and pumps wherever resistance to salt or chemically treated water is needed
Compatibility: S31803 is a duplex stainless steel grade recognized for its strength and resistance to corrosion. Make sure the fittings you select are likewise manufactured from S31803 or compatible materials to prevent assembly problems.
Pressure Pressure: Defines how much pressure your application demands. S31803 mesh fittings usually carry a high-pressure rating, but the fitting’s pressure rating must align with what your system requires.
Size and type: Think about the size and type of fittings your piping system needs. This covers aspects such as the fitting’s shape, whether it is a coupling, elbow, tee, or another fitting, and the connection type (threaded or socket weld).
End connections: Determine whether threaded or socket weld fittings suit your application. Threaded fittings are easy-to-install cables but may not work well in high-pressure settings. Socket weld fittings offer outstanding strength and resistance to leaks.
Standards and Specifications: To guarantee quality and performance, confirm that fittings comply with relevant industry standards and specifications, such as ASTM, ASME, ANSI, or other international standards.
Email: sales@koasteel.nz
