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Duplex 2205 Stainless Steel Tubes and Tubings | ASTM A789 UNS S31803 | ASTM A789 UNS S32205

Duplex Stainless Steel 2205 Seamless Tube | Duplex Stainless Steel  2205 Welded Tube

Duplex Stainless Steel 2205 Tube Supplier | Duplex Stainless Steel 2205 Tube Manufacturer | Duplex Stainless Steel 2205 Tube Exporter

An ISO 9001:2008 certified company, Oshwin Overseas is a leading Manufacturer, Supplier and Exporter of high-quality Duplex Steel 2205 Tubes with ASTM A789 / ASME SA789. Duplex 2205 Tubing are available in all types and forms like Duplex 2205 Seamless Tubes and Duplex 2205 Welded Tubes in OD and NB sizes. In addition to standard tube sizes, we are specialized in manufacturing, supplying and exporting custom tube sizes of Duplex Steel Tubes cold drawn Duplex Seamless Tubes and Duplex Welded Tubes from our Factory. Typical uses of Duplex 2205 Tubing are in oil and gas equipment, offshore technology, seawater desalination plants, chemical industry, flue-gas cleaning, desalination plants and seawater systems and pulp and paper industry. Oshwin Overseas provides a whole range of high-class, customizable and innovative ASTM A789 Duplex 2205 Seamless Tubes and Duplex 2205 Welded Tubes using state-of-art technology. Oshwin Overseas deals in Duplex Steel 2205 Tubes, Duplex Steel 2205 Tubing, Duplex Steel Tubes, Duplex 2205 Tubes, 2205 Duplex Tubes, Duplex Stainless Steel Tubes, 2205 Duplex Stainless Steel Tubes, Duplex Stainless Steel 2205 Tubes, Duplex Tubing, Duplex Steel Tubing, Duplex 2205 Tubing, Duplex Seamless Tubes, Duplex 2205 Seamless Tubes, Duplex Welded Tubes, Duplex 2205 Welded Tubes, ASTM A789 UNS S32205, ASTM A789 UNS S31803.

Oshwin Overseas has been serving the needs of the oil and gas industries, automotive, shipbuilding, power plants, for more than 2 decades. We have supplied Duplex 2205 Tubing ASTM A789 Seamless Tubes and Welded Tubes to Petrochemical Plants, Nuclear Power Projects, Oil & Gas Industries in India, UAE, Abu Dhabi, Dubai, UK, England, London, US, California, Texas, New York, Georgia, New Jersey, Australia, Brazil, Canada, France, Germany, Greece, Indonesia, Italy, Malaysia, Netherland, Philippines, Russia, Saudi Arabia, Singapore, South Africa, South Korea, Spain, Sweden, Thailand, Ukraine. Oshwin Overseas have been supplying high-quality UNS S32205 and UNS S31803 ASTM A789 / ASME SA789 with most advance technology and with most reliable quality. All Duplex Tubes (SA789 UNS S31803) are offered with a NACE 3.1 Certification, Mill Test Certification, and ISO 17025 Standards by a Government of India approved Laboratory. Positive Material Identification is done on all raw materials procured at Oshwin Overseas. Oshwin Overseas also offer a range of allied services including Cutting, Welding, Electro Polishing, Shot-Blasting and more.

Duplex 2205 Tube Specification

Standard / Specifications : ASTM A789 / ASME SA789 (A789 UNS S31803 / SA 789 S31803 / ASTM A789 S31803 / SA 789 UNS S31803).

Grades : EN 1.4462 / UNS S31803 (F51) / UNS S32205 (F60).

Types of Tubes : Seamless / Welded / Fabricated / ERW / EFW.

Forms of Tubes : Round Tube, Square Tube, Rectangle Tube.

Standard Stainless Steel Tube Sizes : 1/8” to 48”, Seamless Tubes up to 24”.

Wall Thickness : 0.08mm – 1.5 mm.

Outer Diameter : 0.3mm – 10mm.

Thickness : 0.4mm up to 30.00 mm, Schedules 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXS.

Hardness : Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc.

Surface Finishing : Bright, Polish & Black.

Our Duplex 2205 Tubing conforms to NACE MR0175/ISO 15156.

Types of Duplex Stainless Steel 2205 Tubes

Duplex 2205 Seamless Tube Supplier

Duplex 2205 Seamless Tubes

Duplex 2205 Seamless Tubes is made from a solid round steel ‘billet’ which is heated and pushed or pulled over a form until the steel is shaped into a hollow tube. 2205 Duplex Seamless Tube don’t have a weld seam. In Duplex Seamless Tube, there are no welding or joints and is manufactured from solid round billets. Duplex Seamless Tube is manufactured by extruding the metal to the desired length and does not have any joint in its cross-section through-out its length.

Duplex Stainless Steel Seamless Tube is finished to dimensional and wall thickness specifications in tube sizes from 1/8 inch to 26 inch OD. Oshwin Overaeas is one of the leading seamless Tube manufacturer in India. Oshwin Overseas are specialized in Duplex 2205 Seamless Tube manufacturing. Seamless Tubes have better joviality, or roundness, than welded Tubes.

Duplex 2205 Welded Tube

Duplex 2205 Welded Tubes

Duplex 2205 Welded Tubes is made by forming flat products (strip, sheet or plate) into the desired shape, in this case, normally round. Once the desired shape has been achieved, a high energy source is used to melt the metal locally at the weld joint. It is squeezed together and allowed to solidify, forming a weld bead. The high energy source may be an electric arc, a plasma arc, a laser beam, or even an electron beam.

Duplex Welded Tubes are typically more cost effective than their seamless equivalents. Duplex Stainless Steel Welded Tubes are usually more readily available than seamless. The longer lead time required for seamless Tubes can not only make timing problematic, but it also allows more time for the price of the materials to fluctuate. The wall thickness of Duplex 2205 Welded Tubes is generally more consistent than that of seamless Tubes.

Forms of Duplex Stainless Steel 2205 Tubes

GradeTypeUnified Numbering System (UNS)Forgings GradesWerkstoff-nr.EuronormAFNORDIN Standards
2205Standard DuplexS31803 / S32205F51 / F601.4462en 1.4462X2CrNiMoN22-5-3Z2.CND22.05.03din 1.4462
MaterialTube Specification
Duplex steel Tube TubingS32205/S31803ASTM A789 / ASME SA789
Duplex Steel Seamless Tube TubingASTM A789 UNS S32205, ASTM A789 UNS S31803
Duplex Steel Welded Tube TubingASTM A789 UNS S32205, ASTM A789 UNS S31803
Outside Diameter Thickness Range Type Form Length
O.D 5/8" to 5"
MM 0.6250 to 5.00
Gauge / SWG - 7 to 19
MM - 0.2615 to 9.266
Seamless / ERW / Welded / Fabricated / EFWPrecision Tubes, High Pressure tubes, Instrumentation tubes, Oil and Gas Tubes, Condenser Tubes, Chemical process tubes, Aerospace Tubes, Nuclear Fuel Tubes, Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes, Heat Exchanger Tubes, Capillary TubesSingle Random, Double Random & Required Length End: Plain End, Beveled End, Threaded
2205 Duplex Stainless Steel Tube · Duplex Tube Suppliers · Duplex Tube Manufacturer
Oshwin Overseas is one of the prominent Manufacturer, Supplier, and Exporter of 2205 Duplex Stainless Steel Tube with ASTM A790 and UNS S31803 / UNS S32205. An ISO 9001:2008 Certified Company, Oshwin Overseas is a leading Duplex Tube Supplier and a well known Duplex Tube Manufacturer. Oshwin Overseas offers high quality Duplex Tube in various forms and sizes. Oshwin Overseas deals in all forms of Duplex Tube. Oshwin Overseas supplies Duplex Tube in all countries across the globe, as ware house to near to the airport and port for fast delivery. Oshwin Overseas deals in Duplex Tube at competitive price. A rejection rate of less than one percent has consolidated the claim. The primary reason for this is the priority that we give to complete satisfaction of the customer. We supply and manufacture all forms of Duplex 2205 Tube and export it globally. Tubes manufactured by us are of high qualtity duplex material and conform to international standards and specifications.
Brand: Oshwin Overseas
Manufacturer: Tubacex - Spain, Girnar Metals and Tubes - India, Sumitomo , Mustu Steel - Japan
Model: ASTM A789, ANSI B16.19 Tube Tubing
Product ID: OSH - 2205T
Characteristics of Duplex Stainless Steel 2205 Tubes
  • High Resistance to uniform corrosion.
  • High Resistance to pitting & crevice corrosion.
  • High Resistance to stress corrosion cracking & corrosion fatigue
  • High mechanical strength
  • High Resistance to abrasion & erosion
  • High Resistance to Fatigue
  • High energy absorption
  • Low thermal expansion
  • Good weld ability with care in thick sections
  • Useful up to 600°F
Applications of Duplex Stainless Steel 2205 Tubes
  • Chemical Processing Industry – Transport and Storage, pressure vessels, tanks, piping, and heat exchangers.
  • Oil and Gas exploration and processing equipment – piping, tubing, and heat exchangers
  • Marine Industry and Seawater systems – Cargo Tanks for Ships, High chloride environments,
  • FGD / Effluent Scrubber Systems.
  • Paper and Pulp Industry Digesters, Bleaching equipment and Stock-Handling Systems, Chip Pre-steaming vessels.
  • Food Processing Equipment.
  • Flue gas desulfurization / cleaning equipment
  • Rotors, fans, shafts, and press rolls requiring combined strength and corrosion resistance
  • Biofuels Plant, Desalination plants
  • Firewalls and blast walls on offshore platforms
ElementsCarbon (C)Chromium (Cr)Manganese (Mn)Molybdenum (Mo)Nickel (Ni)Nitrogen (N)Phosphorus (P)Silicon (Si)Sulphur (S)Iron / Ferrum (Fe)
UNS S322050.03 max21.0-
UNS S318030.03 max22.0-
Tensile Strength (Mpa) minYield Strength 0.2% Proof (Mpa) minElongation % (% in 50mm) Hardness (Brinell)Hardness Rockwell C
62144825 min293 max31 max
Density (Kg.m-1)7810
Magnetic Permeability<50
Young’s Modulus (N/mm2)190 x 10^3
Specific Heat, 20°C (J.Kg-1.°K-1)400
Specific Electrical Resistance, 20°C (µO.m)0.85
Thermal conductivity, 20°C15
Mean coefficient of thermal expansion11 x 10^-6

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  • Commercial Invoice including HS Code
  • Packing List including number of boxes, net weight, gross weight, Marks & Numbers
  • Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
  • Material Test Certificates as per EN 10204 3.1, EN 10204 3.2
  • Test Certificates certifying NACE MR0103, NACE MR0175


  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177


The different ways in which our products are packed are:

  • Shrink-wrapped
  • Wooden Boxes
  • Wooden Pallets
  • Wooden Crates
  • Carton boxes


We mark Duplex 2205 as needed with the most suitable & visible marking techniques. Standard Marking System :-

  • Manufacturer’s Name or Trademark
  • Material Designation
  • Size Designation
  • Rating Designation
  • Melt Designation
  • Marking for Identification

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