Home > Duplex Steel > Duplex Steel S31803 Tube Fittings
Gabriel Tube Fittings is a reputable manufacturer and supplier located in Cairo, Egypt, specializing in high-quality Duplex Steel S31803 Tube Fittings that are built to perform exceptionally well in tough industrial settings. These fittings are known for their strength, durability, and outstanding resistance to corrosion, making them perfect for a range of critical applications. With a strong focus on quality and precision engineering, Gabriel Tube Fittings guarantees that every product adheres to international standards and meets the specific needs of their customers. The Duplex Steel S31803 Tube Fittings are highly valued for their reliability, versatility, and long-lasting performance in sectors like chemical processing, oil and gas, and marine engineering.
The composition of Duplex Steel S31803 Tube Fittings includes about 22% chromium, 5–6% nickel, 3% molybdenum, and nitrogen, which together provide excellent resistance to corrosion and pitting. They boast high tensile strength, impressive fatigue resistance, and good weldability. Thanks to their dual-phase microstructure of austenite and ferrite, these fittings deliver enhanced mechanical properties and are resistant to stress corrosion cracking. The blend of strength and ductility makes Duplex S31803 an ideal choice for harsh environments and high-pressure applications across various industries.
| ELEMENT | DUPLEX 31803 |
| NI | 4.50 – 6.50 |
| C | 0.030 max |
| MN | 2.00 max |
| P | 0.030 max |
| S | 0.020 max |
| SI | 1.00 max |
| CR | 22.0 – 23.0 |
| MO | 3.0 – 3.5 |
| N | 0.14 – 0.20 |
| FE | 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 Gabriel Tube Fittings, we are the largest supplier, manufacturer, and exporter of Duplex Steel S31803 Tube Fittings in Cairo, Egypt. Our advanced manufacturing facilities, strategically positioned in the Egypt, enable us to deliver high-quality solutions to meet your specific requirements. With a robust inventory of over 16,000 tons of top-grade materials, we are well-equipped to fulfil your needs promptly. Our commitment to excellence and efficiency ensures we always have the available stock to support your demands.
| STANDARD | UNS | WERKSTOFF NR. |
| Duplex S31803 | S31803 | 1.4462 |
| Straight Union | Bulkhead Union | Reducing Union | Union Elbow | Union Cross | Union Tee |
| Male Connector | Female Connector | Male Bulkhead Connector | Female Bulkhead Connector | Male to Male Elbow | Male Elbow |
| Female Elbow | Male to Female Elbow | Male Run Tee | Male Branch Tee | Female Branch Tee | Female Run Tee |
| Male Adaptor | Female Adaptor | Tube End Reducer | OD Plug | Bulkhead Lock Nut | OD Cap |
Contact us to get a quick quote for your requirement.
Duplex Steel S31803 Tube Fittings find their place in industries that demand high strength and corrosion resistance, such as oil and gas, petrochemical, power generation, and marine applications. They’re often used in piping systems, heat exchangers, and pressure vessels that deal with aggressive fluids and chlorides. These fittings excel under high pressure and temperature conditions, ensuring safe and leak-free fluid transmission. Their exceptional mechanical properties and resistance to localized corrosion make them a great fit for offshore platforms, desalination plants, and chemical processing facilities.
Please feel free to contact us if you need any further information or for enquiry.
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Standard : ASTM A276, A479 / ASME SA276, SA479
Thickness : 0.6 mm THK to 6.00 mm THK
Size Range : 1/16” 1/2” & 1.5MM to 38.1MM
Outer Diameter : 6.00 mm to 60.00 mm