Home > Duplex Steel > Duplex Steel S31803 Flanges
Russ Nickel Alloys, located in Manila, Philippines, is a reliable manufacturer and supplier of top-notch metal products, including Duplex Steel S31803 Flanges. Renowned for their precision, strength, and resistance to corrosion, these flanges are crafted to meet international standards for durability and reliability. Designed to create secure, leak-proof connections, Duplex Steel S31803 Flanges from Russ Nickel Alloys excel in demanding marine, offshore, and industrial piping systems. Perfect for high-pressure and corrosive environments, these flanges guarantee safety, efficiency, and outstanding performance. Russ Nickel Alloys is committed to delivering products that blend quality, toughness, and long-lasting reliability for essential piping connections.
Duplex Steel S31803 Flanges are crafted from duplex stainless steel, which contains around 22% chromium, 5-6% nickel, and 3% molybdenum. This unique blend offers remarkable resistance to pitting, crevice, and stress corrosion cracking, while also providing high tensile strength and toughness. These flanges maintain their shape and mechanical integrity even under high-pressure and high-temperature conditions. Thanks to their duplex structure, S31803 Flanges are built for durability, corrosion resistance, and the ability to withstand mechanical stress, making them perfect for challenging marine, offshore, chemical, and industrial piping applications that demand secure and lasting connections.
| Specifications | ASTM A182 / ASME SA182 |
| Size | 1/8″ NB TO 48″ NB |
| Standards | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grades | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| 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 |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
At Russ Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Flanges in Manila, Philippines, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Philippines, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Duplex Steel S31803 Flanges are extensively utilized in industries that require robust, corrosion-resistant, and durable piping components. You’ll find them commonly used in offshore oil and gas platforms, marine piping systems, chemical processing facilities, desalination plants, and industrial machinery. These flanges ensure secure, leak-free connections for pipelines that transport seawater, chemicals, or other aggressive fluids. With Duplex Steel S31803 Flanges from Russ Nickel Alloys, you can count on long-term performance, safety, and efficiency. Their impressive combination of strength and corrosion resistance makes them a go-to choice for demanding applications.
