| 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
Our stainless steel tubular products, meticulously crafted from premium stainless steel strips, are expertly roll-formed and seamlessly fusion-welded along the longitudinal seam. Daxun's state-of-the-art welding process stands unparalleled, employing zero filler metals.
Quick Response
- Exceptional resistance to uniform corrosion
- Superior resistance to inorganic acids and chlorides
- Engineered for use with dilute hydrochloric acid
- Enhanced machinability and weldability
- Effective resistance to stress corrosion cracking in chloride environments
- Outstanding resistance to pitting and crevice corrosion
- Robust resistance to general corrosion
- Extremely high mechanical strength
- Excellent weldability
- Impressive impact strength
Stainless Steel Drawn Tube
Our stainless steel tubular products undergo sophisticated rolling and re-drawing processes to achieve precise final sizes, making them ideal for thick-walled, large-diameter tubes. This method offers significant cost advantages over seamless tubes. Additionally, all drawn tubes are bright annealed, ensuring unparalleled quality.
Daxun Advantages
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Daxun Alloy is unwaveringly dedicated to providing customers with defect-free products by:
Creating the highest quality and value 2507 stainless steel pipe products, offering a swift response and on-time delivery, prioritizing health, safety, and environmental protection, and adhering to all applicable laws. Leverage our extensive experience and culture of continuous improvement to meet or exceed your expectations and requirements for 2507 stainless steel pipes.
Stainless Steel Seamless Tube
Our stainless steel seamless tubes are meticulously crafted from hollow sections produced via piercing or hot extrusion processes. Perfect for large diameter-to-wall thickness ratios, these tubes feature excellent external dimensional tolerances.
Quality, Delivery, Inspection
- At Jiangsu Daxun Alloy Co., Ltd., we are committed to excellence through stringent quality assurance tests. These include the flattening test, pitting and resistance test, mechanical test, hardness test, material positive identification, and expansion test. Every meticulous test ensures our materials are perfectly suited for your demanding applications.
- Throughout the entire production process, we precisely measure the diameter, thickness, and surface quality of our products. Our standard delivery timeline spans 7 to 15 days. For special-sized products, this timeline may extend up to 20 days, ensuring that every detail aligns with your exact specifications.
We strictly adhere to delivery timelines as outlined in our contracts, ensuring punctual and reliable service.
- We welcome and support inspections by customer-authorized third-party agencies at our factory.
- We provide free samples for rigorous testing, allowing you to experience our unparalleled quality firsthand.
- We offer both on-site and video factory inspection options, ensuring transparency and trust in our manufacturing process.
Discover the unmatched stainless steel pipe manufacturing capabilities of Daxun.
Our forming capabilities are second to none, 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 exceptional 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.
At Jiangsu Daxun Alloy Co., Ltd., we boast an unparalleled range of pipe extrusion capabilities, thanks to our state-of-the-art vertical and horizontal presses with capacities ranging from 12,000 to 35,000 tons. This advanced machinery empowers us to fabricate the industry's longest lengths and largest diameter pipes, meeting the most demanding specifications with unmatched precision and quality.
Jiangsu Daxun Alloy Co., Ltd. is a trusted partner for the power generation sector, delivering critical components designed for excellence. Our extensive portfolio includes ductwork, boiler tubes, main steam tubes, thermal reheat tubes, and flue gas desulfurization units, all meticulously engineered for nuclear, coal-fired, renewable energy, and combined cycle applications. Our commitment to innovation and quality ensures that our products meet the highest standards of performance and reliability.
Global leader in stainless steel pipe and tube fabrication services
Daxun Alloys offers a comprehensive range of Duplex 2507 Stainless Steel Pipes including welded and seamless varieties, available in diverse shapes and sizes. These meet stringent industry standards such as ASTM, ASME, EURONORM, and AFNOR. We are an AS 9100D Certified supplier of ASTM A790, UNS S32750, and UNS S32760 Seamless Pipes from China.
Duplex 2507 stainless steel is a superior duplex material featuring low carbon (up to 0.03%), chromium (~25%), nickel (~7%), and molybdenum (~4%) content. Specifically designed to meet the demanding requirements of high-strength and corrosion-resistant applications, this steel is ideal for chemical process equipment, the petrochemical industry, and seawater equipment. Its high chromium, molybdenum, and nitrogen content provides exceptional resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking.
Daxun Alloy comprehends international specifications for super duplex seamless pipes, and our expertise ensures we supply the most suitable products to our customers. We are recognized as one of China's premier super duplex pipe suppliers, noted for our competitive pricing, exceptional quality, and punctual delivery.
Super duplex seamless pipes are essential in the oil and gas industry, particularly in high-salinity horizontal wells or brine injection wells for enhanced oil recovery. These pipes are robust, offering superior resistance to corrosion, fatigue, and erosion. ASTM A790 S32750 pipes combat uniform corrosion caused by organic acids such as acetic and formic acids. Renowned for their strong thermal conductivity and energy absorption, super duplex hollow pipes are also easily machinable and weldable. When heated, Werkstoff 1.4410 pipes exhibit minimal deformation, reducing the risk of faulty flanges or connections. 2507 Super Duplex Pipes are widely used in heat exchangers for chemical processing, offshore oil and gas processing, and petrochemical manufacturing. Our Super Duplex 2507 Seamless Pipes adhere to international standards and serve multiple industries globally.
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 |
Leading Stainless Steel Tube and Pipe Suppliers in China
DUPLEX 2507 STAINLESS STEEL
- Daxun Alloy's extensive stainless steel inventory features the highly acclaimed Duplex 2507 Stainless Steel Pipe. This super duplex stainless steel boasts an impressive composition of 25% chromium, 4% molybdenum, and 7% nickel, making it ideal for high-strength and corrosion-resistant applications. Industries such as chemical processing, petrochemical, and seawater equipment find this alloy particularly advantageous. It demonstrates outstanding resistance to chloride stress corrosion cracking, excellent thermal conductivity, and a low coefficient of thermal expansion. The high chromium, molybdenum, and nickel content provide superior resistance to pitting, crevice, and general corrosion.
GENERAL PROPERTIES
- Duplex 2507 (UNS S32750) is an elite super duplex stainless steel pipe, meticulously engineered to meet the demands of high-strength and corrosion-resistant applications. With 25% chromium, 4% molybdenum, and 7% nickel, it excels in critical sectors like chemical processing, petrochemical, and seawater equipment. It offers robust resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion. Its high chromium, molybdenum, and nickel content ensure it stands out in terms of resistance against pitting, crevice, and general corrosion.
Applications
- Oil and Gas Industry Equipment
- Offshore Platforms, Heat Exchangers, Process and Service Water Systems, Fire-Fighting 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 diverse range of steel types including 310S, 316L, 304, 304L, 201, 904L, 316H, 316, 316L, and the 400 series. Our portfolio also includes duplex stainless steels like 2205, 2304, 2101, 2507, and high-nickel alloys such as 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 customize products precisely to your drawings, ensuring your utmost satisfaction.
Q3. How does your factory do regarding quality control?
Quality is our utmost priority. We maintain stringent quality control measures from the initial stages to the final product, ensuring excellence in every step.
Q4. Can I request to change the form of packaging and transportation?
Yes, we can adapt the packaging and transportation methods to meet your specific requests. However, you will be responsible for any additional costs incurred during this period.
but you have to bear their own costs incurred during this period and the spreads.
Q5. How does your factory do regarding quality control?
Quality is our utmost priority. We maintain stringent quality control measures from the initial stages to the final product, ensuring excellence in every step.
Q6. How long is the delivery time?
A: Our standard delivery time is 7-20 working days after payment confirmation. For urgent orders, we expedite the process to meet your needs.
If the order is urgent, we will push our workshop finish in advance.
Q7. What is your Payment?
A: We accept 100% T/T advance payments and Western Union for smaller orders, ensuring a smooth and secure transaction.
B: For your convenience, we offer a flexible payment option of 30% T/T in advance, with the remaining 70% payable before shipment.
C: For larger orders, we provide the security of a 100% Irrevocable LC at sight, guaranteeing a trustworthy and reliable process.
Q8: Can you produce DDQ (Deep Drawing Quality) materials?
A: Absolutely, we can. Our high-quality material is perfect for stainless steel pots, sinks, bowls, and more. Simply inform us of your intended use, and we will tailor the mechanical properties to perfectly fit your needs.
Q9: What is the procedure to obtain a sample?
A: We are pleased to offer FREE samples for your evaluation and testing. For smaller pieces, we can cover the courier cost, depending on the circumstances.
Q10: Which countries have your products been exported to?
A: To date, our stainless steel materials have been successfully exported to countries including Vietnam, Thailand, Turkey, Russia, Morocco, South Korea, India, Pakistan, UAE, Ukraine, and many more.
Q11: What is the best way to visit your company?
A: The most convenient way is to fly to Guangzhou Baiyun International Airport, where we will gladly arrange to pick you up.
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