| Specifications |
Astm A790/ ASME SA790 |
| Pipe Thickness |
0.5mm - 80 mm |
| Pipe Standard |
EN, ASTM, ASME AISI, GB, JIS, DIN Super Duplex 2507 Pipe Supplier |
| Super Duplex 2507 Seamless Pipe Outer Diameter |
Sizes up to 12" NB/ 6.00 - 250 mm OD |
| Super Duplex 2507 Welded Pipe size |
5.0 to 1219.2 mm |
| Super Duplex 2507 Seamless Tube Size |
6.35 - 810 mm OD |
| Super Duplex 2507 EFW Pipe size |
5.0 - 1219.2 mm |
| Super Duplex 2507 tubing wall thickness |
0.0020″ to 0.0220″ (custom wall thicknesses available) |
| Super Duplex 2507 Seamless Tube Size |
15 NB - 508 NB IN/ 3.35 To 508 mm OD, |
| Super Duplex 2507 Pipe & Tube Finish |
AP (Annealed & Pickled), Polished, MF, BA (Bright & Annealed), NO.4, NO.1, BA, 2B, 8K, HL, Mirror finish,etc |
| Pipe & Tube Swg & Bwg |
12 Swg., 10 Swg., 16 Swg., 14 Swg., 20 Swg, 18 Swg. |
| Super Duplex 2507 Pipe Schedule |
SCH10, SCH 5, SCH 80, SCH 40, , SCH 160, SCH 80S, SCH XS, SCH XXS |
| Super Duplex 2507 Pipe & Tube Form |
Hydraulic, Round, Rectangular, Hollow, Pan Cake Coils, Square, Coiled, "U" Shape, Straight Pipes etc. |
| Super Duplex 2507 Pipe & Tube Length |
Standard & Cut length, Single and Double Random, |
| Super Duplex 2507 Pipe & Tube Type |
Super Duplex 2507 ERW/ Seamless / Welded / EFW / CDW /Fabricated / CEW/ DOM Pipe |
| Pipe Value Added Service |
as per required Size & Length Draw & Expansion , Pickled Bending and Polish (Electro & Commercial) Annealed, Machining Etc. |
| Super Duplex 2507 Tube Application |
Oil Tube, Boiler and Heatexchanger, Gas Tube, Fluid Tube |
| Super Duplex 2507 Pipe & Tube End |
Beveled End, Plain End, Treaded Pipe. |
| Pipe Marking |
marked as follows All Super Duplex 2507 Pipes : Standard, Grade, Thickness, OD, Heat No. (Or according to the customer's request.), Length |
| Material Test Certificates (MTC) |
100% Radiography Test Report, Raw Materials Certificate |
| Material Test Certificates (MTC) as per EN 10204 3.1, EN 10204/3.1B and EN 10204 3.2 |
| Manufacturer Test Certificate |
| Form A for Generalized System of Preferences (GSP) |
| Fumigation Certificates |
| Third Party Inspection Report |
| Heat Treatment Charts |
| Super Duplex 2507 Tubes HS Code Commercial Invoice |
| Laboratory Test Certificate from Govt. Approved Lab. |
| Specialized in |
Super Duplex 2507 Heat Exchanger & Condenser Tubes |
| Super Duplex 2507 Capillary Tube & Other Odd Size |
| Large Diameter Super Duplex 2507 Pipe |
Stainless Steel Welded Tubes: Premium quality for versatile applications.
Our stainless steel tubular products, masterfully crafted from the finest stainless steel strips, are roll-formed and fusion-welded along the longitudinal seam. The Daxun welding process is impeccable, utilizing no filler metal at all, ensuring strength and durability.
Quick Response: We prioritize speed and efficiency in every interaction.
- Outstanding Resistance to Uniform Corrosion: Engineered for long-lasting durability.
- Superior Resistance to Inorganic Acids/Chlorides: Built to withstand harsh environments.
- Ideal for Use with Dilute Hydrochloric Acid: Reliable and safe performance.
- Enhanced Machinability and Weldability: Effortless fabrication and assembly.
- Resistant to Stress Corrosion Cracking in Chloride-Containing Environments: Unmatched reliability.
- Exceptional Resistance to Pitting and Crevice Corrosion: Designed for extreme conditions.
- Robust Resistance to General Corrosion: Ensuring longevity and reliability.
- Extremely High Mechanical Strength: Engineered for maximum performance.
- Excellent Weldability: Seamless integration for all your projects.
- High Impact Strength: Built to endure and excel.
Stainless Steel Drawn Tube: Precision-engineered for diverse applications.
Our stainless steel tubular products are meticulously rolled and re-drawn to achieve the perfect final size, making them ideal for thick-walled, large-diameter tubes. This process is cost-effective compared to seamless tubes, with all drawn tubes bright annealed for unparalleled quality.
Daxun Advantages: Discover our commitment to excellence.
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Daxun Alloy is devoted to providing defect-free products by adhering to the highest standards.
Producing the highest quality and value 2507 stainless steel pipe products, with prompt responses and on-time delivery. We prioritize health, safety, and environmental protection, complying with all laws. Leveraging our experience and culture of continuous improvement, we strive to meet or exceed customer expectations for 2507 stainless steel pipes.
Stainless Steel Seamless Tube: Crafted with precision for demanding applications.
Our stainless steel seamless tubes, crafted from hollow sections via piercing or hot extrusion processes, are ideal for large diameter-to-wall thickness ratios, offering exceptional external dimensional tolerances.
Quality, Delivery, Inspection: Our commitment to excellence.
- At Jiangsu Daxun Alloy Co., Ltd., we pledge excellence through rigorous quality assurance tests, including the flattening test, pitting resistance test, mechanical test, hardness test, material positive identification, and expansion test. These meticulous evaluations ensure our materials meet the highest standards for your demanding applications.
- Throughout the production process, we meticulously measure the diameter, thickness, and surface quality of our products. Our standard delivery timeline ranges from 7 to 15 days. For special-sized products, this may extend up to 20 days, ensuring every detail meets your exact specifications.
We strictly adhere to the delivery timelines outlined in our contracts, ensuring punctual and reliable service.
- We welcome and support inspections by customer-authorized third-party agencies at our factory, ensuring full transparency and satisfaction.
- We offer free samples to customers for rigorous testing, allowing you to experience our quality firsthand.
- We provide on-site or video factory inspection options, reinforcing transparency and trust in our manufacturing process.
Discover the unmatched stainless steel pipe manufacturing capabilities of Daxun.
Our forming capabilities are unparalleled, featuring advanced extrusion and cold working assets for tube and pipe manufacturing. We boast one of the world's largest pilger mills and a unique hydroforming process for precision fittings.
Unveiling Daxun's extraordinary pipe processing capabilities.
As a vertically integrated manufacturer, Daxun offers a comprehensive one-stop-shop solution. Whether managing an entire project or handling specific machining jobs, our capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services.
Daxun: Your destination for Bigger, Better Pipe Solutions. Experience innovation and excellence in every product.
Boasting vertical and horizontal presses with capacities ranging from a formidable 12,000 to a monumental 35,000 tons, Jiangsu Daxun Alloy Co., Ltd. stands at the pinnacle of pipe extrusion expertise. Our unparalleled capabilities empower us to craft the industry's longest lengths and largest diameter pipes, setting a new standard in manufacturing excellence.
At Jiangsu Daxun Alloy Co., Ltd., we are honored to serve the power generation sector with vital components, including ductwork, boiler tubes, main steam tubes, thermal reheat tubes, and flue gas desulfurization units. Our meticulously engineered products cater to a diverse array of applications, spanning nuclear, coal-fired, renewable energy, and combined cycle power plants, ensuring peak performance and reliability.
Global Leader in Stainless Steel Pipe and Tube Fabrication Services
Daxun Alloys excels in offering Duplex 2507 Stainless Steel Pipes, including welded and seamless varieties, tailored to meet industry benchmarks such as ASTM, ASME, EURONORM, and AFNOR. As an AS 9100D Certified Supplier, we specialize in ASTM A790, UNS S32750, and UNS S32760 Seamless Pipes, positioning us as a premier supplier from China.
Duplex 2507 stainless steel is a super duplex alloy that boasts a low carbon content (up to 0.03%), along with approximately 25% chromium, 7% nickel, and 4% molybdenum. Designed to withstand the demands of high-strength and high-corrosion-resistance applications, this steel is perfect for chemical processing equipment, petrochemical industries, and seawater applications. Its high resistance to chloride-induced stress corrosion cracking, coupled with exceptional pitting and crevice corrosion resistance due to its high chromium, molybdenum, and nitrogen content, makes it a superior choice.
At Daxun Alloy, we are adept at meeting international specifications for super duplex seamless pipes and possess the expertise to provide the right products to our customers. Our competitive pricing, top-notch quality, and timely delivery make us one of the leading super duplex pipe suppliers in China.
Super duplex seamless pipes are indispensable in the oil and gas sectors, particularly in high-salinity horizontal wells or brine injection wells for enhanced oil recovery. Known for their robustness and resistance to corrosion, fatigue, and erosion, ASTM A790 S32750 pipes also withstand uniform corrosion from organic acids like acetic and formic acids. These pipes demonstrate superior thermal conductivity and energy absorption, and are highly machinable and weldable. Werkstoff number 1.4410 pipes exhibit minimal deformation upon heating, ensuring reliable flanges and connections. 2507 Super Duplex Pipes find extensive use in heat exchangers for chemical processing, offshore oil and gas, and petrochemical industries. Our 2507 Super Duplex Stainless Steel Pipes comply with global standards and serve various industries worldwide.
Chemical Composition of 2205/S32205/S31803 Stainless Steel Pipe
| Grade |
Super Duplex 2507 |
| UNS Designation |
S32750 |
| Carbon (C) Max. |
0.03 |
| Manganese (Mn) Max. |
1.2 |
| Phosphorous (P) Max. |
0.035 |
| *** (S) Max. |
0.02 |
| Silicon (Si) Max. |
0.8 |
| Chromium (Cr) |
24.0-26.0 |
| Nickel (Ni) |
6.0-8.0 |
| Molybdenum (Mo) |
3.0-5.0 |
| Nitrogen (N) |
0.24-0.32 |
| Iron (Fe) |
Bal. |
| Copper (Cu) |
0.5 |
| Other Elements |
- |
Mechanical Properties of 2205/S32205/S31803Stainless Steel Pipe
| Physical Properties of Super Duplex 2507 Alloys in the Annealed Condition at -20°F to +100°F |
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Tensile Strength |
Yield Strength |
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| Alloy |
UNS Designation |
Spec. |
psi |
MPa |
ksi |
psi |
MPa |
ksi |
Elongation in 2 in. (min.) % |
Grain Size Req. |
Max. Hardness |
Modulus of Elasticity (x106 psi) |
Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) |
Thermal Conductivity (BTU-in/ ft2-h-°F) |
| Super Duplex 2507 |
S32950 |
A789, A790 |
100,000 |
690 |
100 |
70,000 |
485 |
70 |
20 |
- |
30.5 Rc |
- |
- |
- |
| Super Duplex 2507 |
S32750 |
A789, A790 |
116,000 |
800 |
116 |
80,000 |
550 |
80 |
15 |
- |
32 Rc |
27.5 |
7.2 |
98 |
2205/S32205/S31803 Stainless Steel Pipe: Physical Properties
| Density, lb/in3 |
0.28 |
| Modulus of Elasticity, psi |
29.0x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F |
7.5 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F |
8 |
| Specific Heat, Btu/lb ˚F |
0.12 |
| Electrical Resistivity, Microhm-in |
31.5 |
Foremost Stainless Steel Tube and Pipe Suppliers in China
DUPLEX 2507 STAINLESS STEEL
- Daxun Alloy Stainless Steel currently boasts an extensive inventory, including the Duplex 2507 Stainless Steel Pipe. This super duplex stainless steel contains 25% chromium, 4% molybdenum, and 7% nickel, making it ideal for applications demanding superior strength and corrosion resistance, such as in chemical processing, petrochemical, and seawater equipment. Its robust resistance to chloride stress corrosion cracking, remarkable thermal conductivity, and low coefficient of thermal expansion make it indispensable. The high chromium, molybdenum, and nickel content ensures outstanding resistance against pitting, crevice, and general corrosion.
GENERAL PROPERTIES
- Duplex 2507 (UNS S32750) is a formidable super duplex stainless steel pipe featuring 25% chromium, 4% molybdenum, and 7% nickel. Tailored for high-demand applications, it is perfect for chemical processing, petrochemical, and seawater equipment due to its exceptional strength and corrosion resistance. It offers excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion. The enriched content of chromium, molybdenum, and nickel grants it superior resistance to pitting, crevice, and general corrosion.
Applications
- Oil and Gas Industry Equipment
- Offshore platforms, heat exchangers, process and service water systems, firefighting systems, injection, and ballast water systems
- Chemical Process Industries, Heat Exchangers, Vessels, and Piping
- Desalination Plants, High-Pressure RO-Plant, and Seawater Piping
- Mechanical and Structural Components, High Strength, Corrosion-Resistant Parts
- Power Industry FGD Systems, Utility and Industrial Scrubber Systems, Absorber Towers, Ducting, and Piping
Standards
- ASTM/ASME ...…. A240 - UNS S32750
EURONORM...... 1.4410 - X2 Cr Ni MoN 25.7.4
AFNOR........... Z3 CN 25.06 Az
Q1: What products can you offer?
A: We offer a broad spectrum of steel types, including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, 316L 300 series, and duplex stainless steel such as 2205, 2304, 2101, 2507, etc. Additionally, we provide high-nickel alloys like 904L, 800H, and 600H.
400 series, and duplex stainless steel like 2205, 2304,2101,2507,etc. 904L, 800H, 600H high-nickel alloy.
Q2. Can you produce the products according to my own drawings?
Yes, we can manufacture products tailored to your drawings, ensuring maximum satisfaction.
Q3. How does your factory do regarding quality control?
Quality is our top priority. We consistently emphasize stringent quality control throughout the entire production process.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can modify the packaging and transportation methods according to your request.
However, you will need to cover any additional costs and price differences incurred during this period.
Q5. How does your factory do regarding quality control?
Quality is our top priority. We consistently emphasize stringent quality control throughout the entire production process.
Q6. How long is the delivery time?
A: Typically, it takes 7 to 20 working days after payment confirmation.
If the order is urgent, we will expedite the production process to meet your timeframe.
Q7. What is your Payment?
A: We accept 100% T/T in advance and Western Union for small orders.
B: For larger orders, we require a 30% T/T deposit with the balance of 70% due before shipment.
C: For substantial orders, we also accept 100% Irrevocable LC at sight.
Q8: Can you make DDQ (Deep Drawing Quality)?
A: Absolutely, we can. Our high-quality materials are perfect for manufacturing stainless steel pots, sinks, bowls, and more. Simply inform us of your specific application, and we will tailor the mechanical properties to meet your precise requirements.
Q9: How to get a sample?
A: We offer FREE samples for your evaluation and testing. If you need a small piece, we might even cover the courier cost, depending on the situation.
Q10: Which countries have you exported to?
A: To date, we have exported our stainless steel materials to an extensive list of countries including Vietnam, Thailand, Turkey, Russia, Morocco, Korea, India, Pakistan, UAE, Ukraine, and many others.
Q11: How to visit your company?
A: You can fly to Guangzhou Baiyun International Airport, and we will arrange to pick you up from there.
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