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Duplex 2205 Tube and Tubing supplier

Siddhagiri Metals and Tubes is a leading supplier, manufacturer and exporter of Duplex Stainless Steel Welded Tube including 2205 Duplex Stainless Steel Welded Tube and Duplex Steel 2205 Welded Tube with ASTM A789 and UNS S31803 / UNS S32205.
Other Names: ASTM A789 UNS S31803, ASTM A789 UNS S32205, Duplex Welded Tube, Duplex Steel Tube, Duplex 2205 Welded Tube.
Material: Duplex Steel, 2205 Duplex Stainless Steel, Duplex Steel 2205, Stainless Steel 2205 Duplex, Duplex 2205 Steel, Duplex 2205, 2205 Duplex.
Brand: Siddhagiri Metals and Tubes
Manufacturer: Siddhagiri Metals and Tubes
Rating: 4.4/5 based on 69 customer reviews

Duplex 2205 Stainless Steel Welded Tube Supplier · ASTM A789 UNS S31803/S32205 · Duplex Steel Tube

2205 Duplex Stainless Steel Welded Tube and Duplex Steel 2205 Welded Tube supplied by Siddhagiri Metals and Tubes is a high quality Duplex Steel Tube with UNS S31803 / UNS S32205 and ASTM A789, offered in forms like Duplex Steel Square Tube, Duplex Steel Round Tube and Duplex Steel Rectangular Tube. Siddhagiri Metals and Tubes is a leading Manufacturer, Supplier and Exporter of Stainless Steel 2205 Duplex Welded Tube and Duplex 2205 Steel Welded Tube in various shapes such as Welded Square Tube, Welded Round Tube and Welded Rectangular Tube as per the clients requirments. We offer 2205 Duplex Stainless Steel Welded Tube and Duplex Steel 2205 Welded Tube as per national as well as international standards and specifications with ASTM A789 UNS S31803 and ASTM A789 UNS S32205. These Duplex Stainless Steel Welded Tube are widely used in various industrial applications.

For more information on Duplex Stainless Steel Welded Tube please Contact Us.

Welded tubes have varied industrial applications such as chemical, petroleum, food processing, plumbing, heat exchangers, paper making, refrigeration, water treatment, steelwork, construction, etc. Choosing the proper tubing is very important and will help eliminate future problems and to improve overall quality of liquid or gas systems. Our Duplex Steel Tubes are manufactured as per stringent manufacturing specifications create smoother, cleaner capillary tubing with consistently uniform ID characteristics and close dimension controls, the proprietary process creates the ultimate inner surface smoothness in the range of 10-15 RMS.

Siddhagiri Metals and Tubes supplies a full range of Duplex Steel Tubes in sizes ranging from 1/8" OD to 2"OD, 3MM OD to 38 MM OD. The thickness of the Duplex Stainless Steel Welded Tube ranges from 1MM to 3 MM, 0.028 to 0.156 IN. Most pipes are available in single random, double random and cut length sections. Our welded tubes are characterized by tight tolerances with precise dimension accuracy, smooths bright surfaces and cleaned, free from oil, grease, and other particles. This ensures an optimized flow of liquids and gases for all kinds of industrial applications.

Siddhagiri Metals and Tubes has been a renowned exporter of Duplex Steel Welded Tubes in countries such as South Africa, Thailand, Australia, Japan, Russia, UAE, Saudi Arabia, Qatar, Afghanistan, Taiwan, Spain, Poland, France, Germany, Canada, etc. We are Saudi Aramco approved company for welded tubing.

  • Tube Specification: ASTM A789 UNS S31803, ASTM A789 UNS S32205
  • Dimension Standard: ANSI B36.19, ANSI B36.10
  • Outside Diameter (OD): 1/8" OD to 2"OD 3MM OD to 38 MM OD
  • Thickness Range: 1MM to 3 MM 0.028 to 0.156 IN, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS
  • Type: Duplex Steel Welded Tube, Duplex Steel EFW Tube, Duplex Steel ERW Tube
  • Form: Duplex Steel Round Tube, Duplex Steel Square Tube, Duplex Steel Rectangular Tube
  • Length: Single Random, Double Random & Cut Length
  • Tubing End: Plain End, Beveled End, Threaded
  • End Protection: Plastic Caps
  • Delivery Condition: Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
  • External Coating: 3LPE / 3LPP/ FBE/ DFBE/ PP
  • Origin: Indian Origin, European Origin, Japanese Origin
  • Testing and Documents: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, Destructive Test Report, Non Destructive Test Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports
  • Packing: Packed in Wooden Boxes, Bubble wraps, Steel Strips Bundled, or as per Customers Requests

2205 Duplex Stainless Steel Welded Tube Sizes

Size Thickness Type
1/8" OD to 2"OD 3MM OD to 38 MM OD 1MM to 3 MM 0.028 to 0.156 IN Duplex 2205 ERW Tubes, Duplex 2205 Welded Tubes, Duplex 2205 Fabricated Tubes, Duplex 2205 LSAW Tubes

Forms of Duplex 2205 Welded Pipe in Stock

In Stock Duplex Steel Square Tube Supplier

Duplex Steel Square Tube

Duplex 2205 Welded Square Tubes ASTM A789

In Stock Duplex Steel Round Tube Supplier

Duplex Steel Round Tube

Duplex 2205 Welded Round Tubes ASTM A789 in sizes 1MM to 3 MM 0.028 to 0.156 IN

In Stock Duplex Steel Rectangular Tube Supplier

Duplex Steel Rectangular Tube

Duplex 2205 Welded Rectangular Tubes ASTM A789

  • Chemical Properties
  • Mechanical Properties
  • Physical Properties
  • 2205 Duplex Stainless Steel
    C P Mn N S Si Cr Ni Mo
    MIN - - - 0.140 - - 22.000 4.500 3.000
    MAX 0.030 0.030 2.000 0.200 0.020 1.000 23.000 6.500 3.500
  • 2205 Duplex Stainless Steel
    Yield Strength
    0.2% Proof
    Tensile strength
    (% in 50mm)
    MIN 450 655 25.00  
    MAX       293
  • 2205 Duplex Stainless Steel
    Units 20°C 100°C 200°C 300°C
    Density g/cm³ 7.8      
    lb/in³ 0.28      
    Modulus of elasticity GPa 200 194 186 180
    psi x 10-6 29      
    Poissons ratio   0.3      
    Linear expansion (RT ➞ T)°C x 10-6/°C - 13 13.5 14
    Thermal conductivity W/m°C 15 16 17 18
      Btu/h ft°F 8.7      
    Thermal capacity J/kg°C 500 530 560 590
    Electric resistivity µΩm 0.8 0.85 0.9 1

Properties of Duplex 2205 Steel

Duplex 2205 Cold Forming

Duplex 2205 has shown good formability in a variety of fabrications. The high strength of Duplex 2205 can pose problems. Even when the equipment has sufficient power, allowance must be made for higher spring-back caused by the grade’s high strength.

Duplex 2205 Hot Forming

2205 Duplex can be worked at maximum hot forming temperature between 2010 and 2100°F (1100 to 1150°C). If the shape of the work piece is not compact, the edges may be significantly cooler than the bulk, and there is risk of cracking in the cooler regions.

Duplex 2205 Machining

Duplex 2205 is somewhat more difficult to machine than the 300 series austenitic stainless steels. Higher cutting forces are required and more rapid tool wear is typical.

Duplex 2205 Welding

2205 Duplex possesses good weldability but Should not generally be welded without filler metal as this may result in excessive ferrite.

Duplex 2205 Heat Treatment

Annealing temperature range is 1868 to 2012°F (1020 to 1100°C). Cannot be hardened by heat treatment, but Duplex 2205 does work-harden. Special consideration is needed to compensate for a higher coefficient of thermal expansion to avoid warping and distortion.

Services We Offer


Documentation is a very important part of the products we supply, and we work continuously to enhance the efficiency of the document-handling process without compromising quality of the product. Documents provided along with the shipment include Certificate of Origin, Material Test Certificate as per EN 10204 3.1 and 10204 3.2, NACE MR10103 and NACE MR0175 certified Test Certificates.

Quality Assurance

Duplex Steel Tubes are manufactured and controlled to international standards such as ASTM, ASME, BS, MSS, EN, DIN or WERKSTOFFE. Our products undergo stringent quality tests before they are dispatched.

Material Testing

PMI Testing, Ultrasonic Test, Mechanical Testing, Spectro Tests for Chemical Analysis of the grade, Flaring Test, IGC, etc. are some of the tests conducted at our facility. We welcome stage wise inspection from any of your representative or third party inspection agencies.

Packing and Delivery

The product is wrapped and packed in wooden crates or carton boxes. Our primary goal is to deliver quality products in time, no matter where the client is located.

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