Devang Fittings is a leading manufacturer and supplier in Kolkata, India, specializing in high-quality piping solutions that we have supplied to various industrial applications. Our production methods emphasize precision and reliability, leading to a wide variety of fittings including Duplex Steel S31803 Pipe Fittings. Our Duplex Steel S31803 Pipe fittings are perfect for applications that require high strength, corrosion resistance and resistance to seawater because of these enhanced durability properties. For the chemical industry, marine industry, or oil and gas industry, you can count on our Pipe Fittings to deliver long-lasting and reliable results.
Specifications ASTM A815 / ASME SA815
Dimensions ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size 1/2″ NB to 24″NB in
Type Seamless / Welded / Fabricated
Bending Radius R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Thickness Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
Duplex Steel S31803 Pipe Fittings are a balanced combination of austenitic and ferritic stainless steels. Typically, a chemical composition would range from 21-23 % chromium, 4.5-6.5 % nickel, 2.5-3.5 % molybdenum, and unspecified small amounts of nitrogen, manganese and carbon. The advantages are their high strength along with good resistance to pitting, crevice corrosion, and stress corrosion cracking. The mechanical properties that can be realized in the developed grades of duplex steels are tensile strength of 620 MPa, yield strength of 450 MPa, and elongation of 25%. Duplex Steel S31803 fittings present the advantages of good weldability, toughness, and high resistance to many corrosion environments when tightening into many applications and industries.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| S31803 | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
Devang Fittings is a leading supplier of Duplex Steel S31803 Pipe Fittings in Kolkata, India. We offer an extensive range of Monel K500 fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | UNS | WERKSTOFF NR. |
| Duplex 2205 | S31803 | 1.4462 |
Duplex Steel S31803 Pipe Fittings from Devang Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
Duplex Steel S31803 pipe fittings provide excellent resistance to corrosion including, pitting, crevice corrosion, and stress corrosion cracking, making them suitable for harsh environments where corrosion is a concern. As a result of their strength and fatigue resistance, these fittings are resilient to pressure. The good fabricability of the alloy is supplemented by weldability and formability. In service conditions, Duplex Steel S31803 pipe fittings offer toughness and resistance to stress that cannot be matched by any other material, providing reliable performance. Chemical processing, marine, and oil & gas industries all place exceptionally high demands on materials and Duplex Steel S31803 pipe fittings are an excellent and economic solution for all engineered piping systems that comply with high quality, safety, and environmental standards.
| Outer Diameter And Inside Diameter | Equivalent | Diameter Of Pipe Nominal | Typical Threads In Inches |
| 5/16 | 0.313 | 1/16 | 27 |
| 13/32 | 0.405 | 1/8 | 27 |
| 35/64 | 0.540 | 1/4 | 18 |
| 43/64 | 0.675 | 3/8 | 18 |
| 27/32 | 0.840 | 1/2 | 14 |
| 1-3/64 | 1.050 | 3/4 | 14 |
| 1-5/16 | 1.315 | 1 | 11-1/2 |
| 1-21/32 | 1.660 | 1-1/4 | 11-1/2 |
| 1-29/32 | 1.900 | 1-1/2 | 11-1/2 |
| 2-3/8 | 2.375 | 2 | 11-1/2 |
| 2-7/8 | 2.875 | 2-1/2 | 8 |
| 3-1/2 | 3.500 | 3 | 8 |
| 4 | 4.000 | 3-1/2 | 8 |
Yes, custom sizes for Duplex Steel S31803 Pipe Fittings are available at Devang Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@devangfittings.co.in.
Duplex Steel S31803 pipe fittings are typically used in applications in a range of industries in which high strength, corrosion resistance and durability are important. Industries that Duplex S31803 pipe applications may be employed include chemical processing, oil and gas, petrochemical, marine and power generation. Duplex S31803 pipe fittings may be used in applications such as pressure vessels, heat exchangers, piping systems, and offshore platforms where resistance to stress corrosion cracking, pitting and crevice corrosion properties is paramount. The mechanical props and resistance of Duplex S31803 pipe fittings in harsh environments provide a dependable, highly durable solution for onshore and offshore demanding applications.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
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