Duplex Steel S31803 Pipes are widely recognized for their excellent combination of strength, corrosion resistance, and durability, making them a preferred choice for demanding industrial applications. These pipes belong to the duplex stainless steel family, featuring a balanced microstructure of austenite and ferrite. This unique structure provides superior mechanical properties compared to conventional austenitic stainless steels, along with enhanced resistance to stress corrosion cracking..
Metal Tubular Products is a trusted stockist and worldwide supplier of Duplex Steel S31803 Pipes, offering products that meet stringent international quality standards. These pipes are manufactured in compliance with ASTM A790 and other relevant specifications, ensuring consistency, reliability, and long service life. Available in seamless and welded forms, Duplex S31803 pipes cater to a wide range of pressure and temperature requirements across industries..
One of the key advantages of Duplex Steel S31803 Pipes is their outstanding resistance to corrosion, particularly in chloride-rich and aggressive environments. They exhibit excellent resistance to pitting, crevice corrosion, and intergranular corrosion, making them suitable for offshore platforms, marine systems, heat exchangers, and chemical processing plants. Their high chromium, molybdenum, and nitrogen content further enhances their corrosion resistance performance..
In addition to corrosion resistance, Duplex Steel S31803 Pipes offer high tensile and yield strength, nearly twice that of standard austenitic stainless steel pipes. This allows for thinner wall thickness designs, resulting in reduced material costs and lighter structural components without compromising safety or performance. These properties make them ideal for oil & gas pipelines, pressure vessels, and structural applications.
| Standard | ASTM A790 / ASTM A789 |
|---|---|
| Grade | UNS S31803 |
| Product Forms | Seamless (SMLS), Welded (ERW, EFW) |
| Supply Condition | Solution Annealed & Pickled |
| Manufacturing Process | Hot Rolled / Cold Drawn |
| End Finish | Plain End, Beveled End, Threaded |
| Application | Oil & Gas, Chemical Processing, Marine, Offshore, Heat Exchangers |
Metal Tubular Products supplies Duplex Steel S31803 Pipes in various sizes, schedules, and finishes to meet customized project requirements. Each product undergoes rigorous quality checks, including chemical analysis, mechanical testing, and non-destructive testing, ensuring flawless performance in critical applications. With a strong global supply network, the company ensures timely delivery and competitive pricing worldwide..
Duplex Steel S31803 Pipes are known for their exceptional strength, corrosion resistance, and long service life, making them ideal for demanding industrial environments. These pipes have a dual-phase microstructure of austenite and ferrite, which provides higher mechanical strength and superior resistance to stress corrosion cracking compared to conventional stainless steels. Metal Tubular Products is a reliable stockist and worldwide supplier of Duplex Steel S31803 Pipes, offering seamless and welded pipes manufactured in accordance with ASTM A790 and other international standards. Due to their excellent resistance to pitting, crevice corrosion, and chloride-induced corrosion, these pipes are widely used in oil & gas, chemical processing, marine, offshore, and heat exchanger applications. With a wide range of sizes, schedules, and finishes available, Metal Tubular Products ensures consistent quality, competitive pricing, and timely global delivery to meet diverse project requirements..
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.03 max |
| Chromium (Cr) | 21.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Nitrogen (N) | 0.08 – 0.20 |
| Manganese (Mn) | 2.0 max |
| Silicon (Si) | 1.0 max |
| Property | Value |
|---|---|
| Tensile Strength | ≥ 620 MPa |
| Yield Strength (0.2% Offset) | ≥ 450 MPa |
| Elongation | ≥ 25% |
| Hardness | ≤ 290 HB |
| Outer Diameter | ½” NB to 24” NB |
|---|---|
| Wall Thickness | SCH 5 to SCH XXS |
| Length | Single Random, Double Random, Custom Length |
| Standard | Equivalent Grade |
|---|---|
| UNS | S31803 |
| EN | 1.4462 |
| DIN | X2CrNiMoN22-5-3 |
Duplex Steel S31803 Pipes are widely used in applications requiring high strength and excellent corrosion resistance. They are commonly utilized in oil & gas, chemical processing, marine, offshore platforms, heat exchangers, and desalination plants where resistance to chloride stress corrosion cracking is essential.
UNS S31803 is a duplex stainless steel grade containing a balanced structure of austenite and ferrite. This composition provides higher mechanical strength, improved corrosion resistance, and better weldability compared to conventional austenitic stainless steels.
Duplex Steel S31803 Pipes are typically manufactured in accordance with ASTM A790 and ASTM A789 standards, ensuring consistent quality, dimensional accuracy, and suitability for high-pressure and corrosive service conditions.
Duplex Steel S31803 Pipes are available in Seamless (SMLS) and Welded forms such as ERW and EFW. These options allow flexibility in selecting pipes based on pressure ratings, size requirements, and specific project applications.
Duplex Steel S31803 Pipes are stocked and supplied worldwide by Metal Tubular Products, offering a wide range of sizes, competitive pricing, and timely global delivery while meeting international quality and testing standards.
We export steel pipes and tubes to over 60 countries worldwide, serving clients across Asia, Europe, the Middle East, Africa, Oceania, and the Americas. Our strong global logistics network ensures reliable delivery, quality assurance, and compliance with international standards.
Export Destinations Include:
Afghanistan, Albania, Andorra, Angola, Austria, Australia, Bahrain, Bangladesh,
Bhutan, Brazil, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus,
Croatia, Czech Republic, Canada, Denmark, Estonia, Egypt, Finland, France,
Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Indonesia, Iran,
Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia,
Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Madagascar, Mexico,
Moldova, Monaco, Malaysia, Maldives, Mongolia, Myanmar (Burma), Nepal,
New Zealand, North Korea, Netherlands, Norway, Nigeria, Oman, Poland, Portugal,
Pakistan, Palestine, Philippines, Qatar, Russia, Romania, San Marino,
Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Saudi Arabia, Singapore, South Korea, South Africa, Sri Lanka, Sudan, Syria,
Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine,
United Kingdom, United Arab Emirates (UAE), Uzbekistan, Venezuela, Vietnam,
Yemen, and more.
