Duplex Stainless Steel Pipe combines the advantages of austenitic and ferritic stainless steel, offering excellent corrosion resistance, high strength, and superior durability. Common grades such as 2205, S31803, 2507, and S32750 duplex stainless steel pipes are widely used in demanding industries including chemical processing, marine engineering, and oil and gas transportation.
Material Type :
Duplex Stainless SteelOuter Diameter Range :
10mm – 630mmWall Thickness Range :
1.0mm – 50mmCustomizable :
YesOrder(MOQ) :
2TSpecifications
Duplex stainless steel pipes feature a balanced microstructure of austenite and ferrite, which provides higher strength and better corrosion resistance compared with conventional stainless steel pipes. Grades such as 2205 and S31803 are widely used for general industrial applications, while 2507 and S32750 super duplex stainless steel pipes are designed for more aggressive environments requiring exceptional corrosion resistance.
These pipes offer excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking, making them particularly suitable for harsh environments such as offshore platforms, seawater systems, and chemical processing equipment.
Duplex stainless steel pipes can be manufactured through seamless or welded processes, depending on the application requirements. Advanced production techniques ensure stable mechanical properties, precise dimensions, and reliable performance in high-pressure and corrosive environments.
Due to their high strength and excellent corrosion resistance, duplex stainless steel pipes are widely used in oil and gas pipelines, chemical processing systems, marine engineering, desalination plants, and industrial heat exchanger equipment. Their durability and long service life make them a reliable material choice for demanding industrial projects.
Duplex Stainless Steel Pipe is one of our core strength products. We maintain substantial inventory to ensure rapid delivery and can also customize extra-large diameter seamless pipes according to your specific requirements. Additionally, we provide comprehensive services including spectroscopic analysis, mechanical property testing, pressure testing, and non-destructive testing (NDT).
| Grade | Grade Equivalent | Mechanical Properties | Size Range | Chemical Composition (Typical, %) |
|---|---|---|---|---|
| 2205
|
UNS S31803
|
Tensile ≥620 MPa
|
OD 6–610 mm
|
C≤0.03, Cr 21.0–23.0
|
| 2507
|
UNS S32750
|
Tensile ≥800 MPa
|
OD 6–610 mm
|
C≤0.03, Cr 24.0–26.0
|
| 2304
|
UNS S32304
|
Tensile ≥600 MPa
|
OD 6–610 mm
|
C≤0.03, Cr 21.5–24.5
|
| 2101
|
UNS S32101
|
Tensile ≥650 MPa
|
OD 6–610 mm
|
C≤0.04, Cr 21.0–22.0
|
|
Note: If you do not find a Duplex stainless steel pipe that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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FAQs
Q: What types and standards of stainless steel do you mainly supply?
A: We mainly supply a wide range of stainless steel products including stainless steel pipes/tubes (seamless and welded), plates, coils, strips, and bars. Common grades include 304/L, 316/L, 321, 310, 410, 430, 2205 (Duplex), and 904L, which are widely used in construction, chemical processing, food equipment, and marine engineering. All stainless steel products comply with international standards such as ASTM, JIS, and EN. We can also provide corresponding material test certificates (MTC) and support customized specifications according to customer project requirements.
Q: Can you provide special specifications or non-standard customization? For example, extra-wide plates or pipes with specific wall thicknesses?
A: Of course. One of our advantages is our flexible customization capabilities. We can provide customized size cutting, special thicknesses, and special surface treatments (such as 2B, BA, No.4 brushed finish, mirror finish) based on your drawings or requirements. Whether it's a small trial order or a large-volume purchase, we can meet your needs.
Q: How do you guarantee the quality and consistency of materials? Do you have quality certifications?
A: Quality is our lifeline. We use direct supply from large steel mills to ensure material traceability. Each shipment comes with a Material Quality Certificate (MTC). We have our own quality control team that conducts random checks on material composition, dimensional tolerances, surface finish, and mechanical properties. Our factory is also ISO 9001:2015 quality management system certified.
Q: What are your delivery times and logistics solutions for overseas customers?
A: For standard-specification in-stock products, we can complete preparation and shipment within 7-14 days. Delivery times for customized products will be determined through negotiation based on the specific process. We have established international logistics partners who can arrange full container load (FCL), less-than-container load (LCL), or air freight according to your needs, and provide various trade terms such as EXW, FOB, CIF, and DDP, with door-to-door service.
Q: As a new customer, how do I begin cooperation? Can you provide samples for testing?
A: The cooperation process is very smooth: 1) You provide specific requirements (brand, specifications, quantity, standards); 2) We provide a quotation and technical advice; 3) After confirmation, we arrange the contract and payment; 4) Production/pickup and quality inspection; 5) Shipment and provision of documentation. We encourage sample testing. For serious customers, we can provide small-size samples to ensure that the materials fully meet your processing and application requirements.
|
Note: If you do not find a Duplex stainless steel pipe that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
Corrosion-Resistant Austenitic Stainless Steel Pipe is manufactured from high-quality austenitic stainless steel grades such as 304, 316, 321, and 310. It offers excellent corrosion resistance, high strength, and good weldability, making it widely used in chemical processing, food equipment, construction structures, and industrial piping systems.
Details
Martensitic Stainless Steel Pipe is a high-strength stainless steel pipe known for its excellent hardness, wear resistance, and mechanical strength. Grades such as 410 and 420 martensitic stainless steel pipes are widely used in mechanical equipment, industrial structures, and engineering applications requiring high durability.
Details
Duplex Stainless Steel Pipe combines the advantages of austenitic and ferritic stainless steel, offering excellent corrosion resistance, high strength, and superior durability. Common grades such as 2205, S31803, 2507, and S32750 duplex stainless steel pipes are widely used in demanding industries including chemical processing, marine engineering, and oil and gas transportation.
Details
Ferritic Stainless Steel Pipe is manufactured from ferritic stainless steel grades such as 430, 409, and 201, offering good corrosion resistance, oxidation resistance, and stable mechanical performance. It is widely used in construction structures, exhaust systems, industrial equipment, and general engineering applications where cost efficiency and durability are important.
Details
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