Shanxi Zhongcheng Metal Co., Ltd.
| Payment Terms | T/T，D/P，D/A，Western Union，PayPal |
| Supply Ability | 10000tons |
| Delivery Time | 15-25days |
| Packaging Details | Wooden pallets, wooden crates, woven bags, etc. |
| Country of Origin | MADE IN CHAINA |
| Brand | Baosteel，TISCO |
| Certifications | ISO/EN 10204 Type 3.1 / 3.2 available |
| Grade | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH) |
| MOQ | 100kg |
| Packaging | Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag |
| Supply Capacity | 10000tons |
| Brand Name | Baosteel，TISCO |
| Model Number | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 |
| Certification | EN 10204 Type 3.1 / 3.2 available |
| Place of Origin | MADE IN CHAINA |
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Product Specification
| Payment Terms | T/T，D/P，D/A，Western Union，PayPal | Supply Ability | 10000tons |
| Delivery Time | 15-25days | Packaging Details | Wooden pallets, wooden crates, woven bags, etc. |
| Country of Origin | MADE IN CHAINA | Brand | Baosteel，TISCO |
| Certifications | ISO/EN 10204 Type 3.1 / 3.2 available | Grade | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH) |
| MOQ | 100kg | Packaging | Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag |
| Supply Capacity | 10000tons | Brand Name | Baosteel，TISCO |
| Model Number | 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 | Certification | EN 10204 Type 3.1 / 3.2 available |
| Place of Origin | MADE IN CHAINA | ||
| High Light | High Strength Duplex Stainless Steel Pipe ，Duplex Stainless Steel Pipe Corrosion Resistant ，Duplex Oil And Gas Tubing | ||
Duplex stainless steel pipe is manufactured from a family of stainless steels with a two-phase microstructure consisting of approximately equal parts of austenite and ferrite. This unique structure provides a combination of high strength and excellent corrosion resistance that exceeds standard austenitic grades like 304 and 316.
Our duplex stainless steel pipes offer superior resistance to stress corrosion cracking, pitting, and crevice corrosion, making them ideal for demanding applications in harsh environments.
| Parameter | Details |
|---|---|
| Standard | ASTM A790, A928, ASME SA790, EN 10216-5, EN 10217-7 |
| Grades | 2205 (UNS S31803 / S32205), 2507 (UNS S32750), S32760, 2304 (UNS S32304) |
| Size (OD) | 6.0 mm – 610 mm (1/8" – 24") |
| Wall Thickness | 0.5 mm – 25.0 mm |
| Length | 3000 mm, 6000 mm, random lengths (custom cut available) |
| Process | Seamless (cold drawn / cold rolled) or Welded (ERW / EFW) |
| Surface Finish | Mill finish, Pickled, Annealed, Polished |
| Grade | UNS Number | PREN* | Yield Strength (MPa) | Best For |
|---|---|---|---|---|
| 2304 | S32304 | 24 – 26 | ≥ 400 | Cost effective alternative to 316L |
| 2205 | S31803 / S32205 | 33 – 35 | ≥ 450 | Most common duplex grade |
| 2507 | S32750 | ≥ 41 | ≥ 550 | Super duplex for extreme conditions |
| S32760 | S32760 | ≥ 40 | ≥ 550 | Super duplex with added tungsten |
PREN = Pitting Resistance Equivalent Number (higher value = better pitting resistance)
| Element | Grade 2205 | Grade 2507 | Grade 2304 |
|---|---|---|---|
| Carbon (C) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 | ≤ 0.80 | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 | ≤ 1.20 | ≤ 2.50 |
| Phosphorus (P) | ≤ 0.030 | ≤ 0.035 | ≤ 0.035 |
| Sulfur (S) | ≤ 0.020 | ≤ 0.020 | ≤ 0.020 |
| Chromium (Cr) | 22.0 – 23.0 | 24.0 – 26.0 | 21.5 – 24.5 |
| Nickel (Ni) | 4.5 – 6.5 | 6.0 – 8.0 | 3.0 – 5.5 |
| Molybdenum (Mo) | 3.0 – 3.5 | 3.0 – 5.0 | 0.05 – 0.60 |
| Nitrogen (N) | 0.14 – 0.20 | 0.24 – 0.32 | 0.05 – 0.20 |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| 2205 | ≥ 620 | ≥ 450 | ≥ 25 | ≤ 290 |
| 2507 | ≥ 730 | ≥ 550 | ≥ 20 | ≤ 310 |
| 2304 | ≥ 600 | ≥ 400 | ≥ 25 | ≤ 290 |
Note: The values above are for reference only. Please refer to the mill test certificate for actual data.
High Strength – Approximately twice the yield strength of 304/316 stainless steel
Excellent Corrosion Resistance – Superior pitting and crevice corrosion resistance
Stress Corrosion Cracking Resistance – Resists SCC in chloride environments
Good Weldability – Can be welded with proper procedures
High Thermal Conductivity – Better heat transfer than austenitic grades
Low Thermal Expansion – Similar to carbon steel
| Property | Duplex (2205) | Austenitic (304/316) |
|---|---|---|
| Yield Strength | ≥ 450 MPa | ≥ 205 MPa |
| Pitting Resistance (PREN) | 33 – 35 | 18 – 25 |
| Stress Corrosion Cracking | Excellent | Poor |
| Thermal Conductivity | Higher | Lower |
| Thermal Expansion | Lower | Higher |
| Cost | Higher | Lower |
| Thickness Reduction Possible | Yes (30-50% thinner) | No |
Duplex stainless steel pipe is used in demanding environments where standard stainless steels fail:
Oil & Gas
Subsea pipelines and risers
Downhole tubing
Flow lines and process piping
Offshore platform equipment
Chemical & Petrochemical
Chemical processing vessels
Heat exchangers
Reactor piping
Acid handling systems
Marine & Desalination
Seawater cooling systems
Desalination plant piping
Shipboard systems
Ballast water treatment
Pulp & Paper
Digester vessels
Bleaching plant piping
Black liquor recovery
Power Generation
Flue gas desulfurization (FGD) systems
Condenser tubing
Geothermal power piping
Food & Beverage
Brine handling systems
Salt processing equipment
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Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
2010
Total Annual:
20000000-50000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Zhongcheng Metal: A professional supplier of stainless steel tubes and plates. We export to 11 countries, including Germany, the United States, the United Kingdom, and Japan. By adopting advanced manufacturing processes and implementing comprehensive 5S management across our operations, we provide... Zhongcheng Metal: A professional supplier of stainless steel tubes and plates. We export to 11 countries, including Germany, the United States, the United Kingdom, and Japan. By adopting advanced manufacturing processes and implementing comprehensive 5S management across our operations, we provide...
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