Super Duplex S32750 Pipes are high-performance stainless steel pipes made from a super duplex stainless grade (UNS S32750 / 2507) that combines the strength of ferritic and austenitic microstructures. This special alloy boasts elevated levels of chromium (~24–26%), nickel (~6–8%), molybdenum (~3–5%), and nitrogen (~0.24–0.32%), which results in exceptional corrosion resistance and mechanical strength in aggressive environments. These pipes significantly outperform traditional austenitic grades (such as 316L) in resistance to pitting, crevice corrosion and chloride-induced stress corrosion cracking, making them ideal for extremely demanding industrial uses.
The mechanical performance of Super Duplex S32750 Pipes is one of their key strengths. With tensile strengths often exceeding 800 MPa and yield strengths around 550 MPa, these pipes provide structural integrity under heavy loads and pressures. Their low thermal expansion and high thermal conductivity further support reliability in fluctuating thermal conditions. These characteristics allow designers to use thinner walls for equivalent strength, reducing weight and material costs in critical systems.
Manufacturers and global stockists of these pipes — including companies and metal suppliers like Metal Tubular Products and others in the tubular products industry — often keep extensive inventories to meet urgent project requirements. Pipes are stocked in various standards such as ASTM A790 / ASME SA790 for seamless and welded variants, and available in diverse sizes, wall thicknesses and end-finish options (plain, bevelled, threaded) to suit bespoke engineering needs..
The applications of Super Duplex S32750 Pipes span several capital-intensive industries. They are particularly popular in offshore oil & gas exploration and production, subsea pipelines, chemical processing lines, sea water handling systems, desalination plants, and power generation facilities. Their robustness in harsh, chloride-rich and high-pressure environments ensures long service life and reduced maintenance costs — key factors for high-value industrial projects..
| Standard | ASTM A790 / ASME SA790 |
|---|---|
| Grade | UNS S32750 (Super Duplex 2507) |
| Product Forms | Seamless (SMLS), Welded (ERW / EFW) |
| Supply Condition | Solution Annealed & Pickled |
| Manufacturing Process | Hot Finished / Cold Finished |
| End Finish | Plain End, Beveled End, Threaded |
| Application | Oil & Gas, Chemical Processing, Offshore, Marine, Desalination, Power Plants |
Global pipe distributors and stockists maintain networks that supply these high-grade pipes to regions across Asia, Middle East, Europe, Africa, and the Americas. Suppliers provide not just pipes but custom fabrication, quality certifications (MTCs), third-party inspection support, export packing, and logistics assistance (FOB, CIF terms) to meet international project standards. This makes Super Duplex S32750 Pipes a preferred choice for engineering firms and EPC contractors worldwide..
Finally, the weldability and fabrication versatility of S32750 enhances its appeal. Despite its high strength, this alloy can be joined using modern welding techniques without significant loss of corrosion resistance, and it can be machined or fabricated to exact system requirements. As a result, stockists and tubular product suppliers can deliver tailored solutions, from standard pipe runs to bespoke engineered assemblies.
| Element | Composition (%) | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Carbon (C) | ≤ 0.03 | ||||||||||||||||||||||||||||||
| Chromium (Cr) | 24.0 – 26.0 | ||||||||||||||||||||||||||||||
| Nickel (Ni) | 6.0 – 8.0 | ||||||||||||||||||||||||||||||
| Molybdenum (Mo) | 3.0 – 5.0 | ||||||||||||||||||||||||||||||
| Nitrogen (N) | 0.24 – 0.32 | ||||||||||||||||||||||||||||||
| Manganese (Mn) | ≤ 1.20 | ||||||||||||||||||||||||||||||
| Silicon (Si) | ≤ 0.80 | ||||||||||||||||||||||||||||||
| Phosphorus (P) | ≤ 0.035 | ||||||||||||||||||||||||||||||
| Property | Value |
|---|---|
| Tensile Strength | ≥ 800 MPa |
| Yield Strength (0.2% Offset) | ≥ 550 MPa |
| Elongation | ≥ 15% |
| Hardness | ≤ 32 HRC |
| Impact Test | As per ASTM A790 |
| Outside Diameter | ½” NB to 24” NB |
|---|---|
| Wall Thickness | SCH 5, 10, 20, 40, 80, 160, XXS |
| Length | Single Random, Double Random, Custom Cut Length |
| Surface Finish | Annealed, Pickled, Polished |
| Standard | Equivalent Grade |
|---|---|
| UNS | S32750 |
| EN | 1.4410 (X2CrNiMoN25-7-4) |
| AFNOR | Z2 CND 25-07 Az |
| ASTM / ASME | ASTM A790 / ASME SA790 |
| Werkstoff | 1.4410 |
Super Duplex S32750 Pipes are primarily used in highly corrosive and high-pressure environments such as oil & gas production, offshore platforms, chemical processing, desalination plants, marine systems, and power generation industries. Their superior strength and corrosion resistance make them ideal for demanding applications.
S32750 is the UNS designation for Super Duplex Stainless Steel 2507. It indicates a high-alloy duplex stainless steel with excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, along with high mechanical strength.
Super Duplex S32750 Pipes are commonly manufactured according to ASTM A790 and ASME SA790 standards for both seamless and welded pipes, ensuring compliance with international quality and performance requirements.
Super Duplex S32750 Pipes are available in Seamless (SMLS) and Welded forms such as ERW and EFW. These options allow flexibility for different pressure, diameter, and project-specific requirements.
Super Duplex S32750 Pipes are stocked and supplied worldwide by Metal Tubular Products, offering a wide size range, ready stock, fast delivery, and full compliance with international quality standards for global industrial and offshore projects.
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.
