ASTM A789/A790 Duplex Seamless Pipes Supplier in India, Duplex Tubes Exporter, Duplex ERW Pipes/Tubes

Duplex Stainless Steel Pipes Suppliers, Duplex 2205 Tubing Exporter, Duplex ERW Pipes Manufacturer

WNR 1.4462, UNS S31803/S32205 Pipes Supplier, 2205 Duplex Seamless Pipes, 2205 Duplex Tubes Manufacturers

India Duplex Stainless Steel Pipe Manufacturers – Duplex stainless steel pipes are widely used in chemicals, petrochemicals, and oil & gas products. Duplex stainless steel pipes are highly resistant to fluids, pressures, and high manufacturing temperatures. Our complete range of piping products include Duplex seamless pipes, Duplex steel tubing, Duplex ERW, welded or fabricated pipes, Duplex elbow, Duplex tee, Duplex reducer, Duplex flanges and Duplex fasteners. As one of the leading stainless steel duplex pipe manufacturers in India, we stock over 250 tons in both duplex seamless pipes, and duplex welded pipes. We stock and supply duplex pipes in size range of 6mm OD to 610mm OD, with thickness upto 20mm. We manufacture large diameter fabricated Duplex pipes, high wall thick duplex pipes and thin walled stainless steel duplex tubings.

We follow a strict quality control system for stainless steel duplex 2205 pipes, and supply all our products with test certificates, as per EN 10204 3.1. Strict quality control system and perfect after-sales service system are always our top concern which can guarantee and track the quality of our products from raw materials procurement, production processes, finish products as well as after-sales service. Over the years, Metline has earned a reputation for providing the most competitive prices, technical services and on time deliveries of your duplex steel pipes, duplex pipe fittings, duplex flange, duplex valves and other supply needs. Our main market is North America, Europe, Middle East, Southeast Asia, South Africa and so on. We look forward to receiving your attention and inquiry in the future.

ProductDuplex Pipes (UNS S32205, UNS S31803)
TypeSeamless, Welded, ERW, 100% X Ray Welded
Size OD (mm)6.00 to 610.00
Thickness (mm)0.5mm to 30mm
Length (mm)6000, 3000, 2000, 12000, Custom Length
FinishAnnealed & Pickled, 2B, No.4, Mirror, Polish
PackingBundled Packing
ServicesCutting, Beveling, Threading, Polishing
Duplex 2205 Pipes, Fittings, Flanges, Fasteners Manufacturers in India

We Sell High Quality Duplex Steel Pipes, Tubes & Fittings at Reasonable Prices!

If you are looking for high quality stainless steel duplex pipe and fittings manufacturer, contact us on or +919987448842

Stainless Steel Duplex | UNS S31803 / S32205 | WNR 1.4462 | Duplex Seamless Tubes | Duplex Welded Pipes

ASTM A790 UNS S31803 Pipes SCH 10S | 1.4462 Pipes, SCH 40S | Duplex Pipes, SCH 80S | Duplex Pipes, SCH 160 | Duplex Tubing

  • Seamless & ERW Stainless Steel Duplex Pipes, Stainless Steel Duplex Tubes Available for Immediate Supply
  • Request the Latest Prices for Duplex Stainless Steel Pipes, Stainless Steel Duplex Tubes –  Email Us:

What is Duplex Stainless Steel?

Alloy 2205 (UNS S31803) is one of the most recognized and widely used duplex stainless steel grade, with excellent general corrosion resistance and superiority over grade 304 or 316 in most environments. Metline Industries is India’s one of the most trusted supplier of various grades of duplex stainless steels including UNS 31803 (F51) and UNS 32205 (F60) Alloy 2205. The ratio of ferrite to austenite in Duplex stainless steel is approximately 50:50.

The characteristic feature of duplex stainless steels is their dual phase microstructure, comprising of approximately 50% of austenitic and 50% of ferrite. The yield strength of duplex stainless steel is typically double that of austenitic stainless steel.

Duplex fittings, duplex pipes and duplex plates are one of the key product items of METLINE and are widely supplied from stock to various industries such as chemical, petrochemical, marine, oil and gas and transportation. Stainless steel Duplex pipes, Duplex tubing’s and Duplex fittings are widely used for oil field piping works and heat exchangers.

Duplex stainless steel pipes and fittings are considered as a cost effective grade due to lower nickel and molybdenum contents than their austenitic counterparts of similar corrosion resistance.  Due to the lower alloying content, duplex stainless steels are generally lower in cost.  Also, due to higher yield strength it could also be possible to reduce the thickness of duplex stainless steel products, compared to austenitic stainless steel.  The dual benefit of lower prices and weight savings make duplex stainless steels economically very effective for project managers.

When compared to 2205 grade duplex stainless steel, 904L has similar corrosion resistant properties but lower mechanical strength. 2205 is also a lower cost option compared to 904L, but is not suitable for temperatures above 300°C.  Grade 2205 is not generally suitable for use at temperatures above 300°C as it suffers from precipitation of brittle micro-constituents, nor below -50°C because of its ductile-to-brittle-transition.

Duplex 2205 products can be produced and supplied in the various forms such as plates, bars, pipes, tubes, fittings, flanges, and valves in accordance with relative standards such as ASTM A240, ASTM A479, ASTM A484, ASTM A276, ASTM A789, ASTM A790, ASTM A182, etc.

Duplex stainless steel 2205 can be manufactured from billets, bars, pipes, or tubes through forging, bending, extruding, or pressing process. It has better formability than that of the ferritic stainless steel grades, but not quite as good as the austenitic stainless steels. Duplex 2205 shall be solution-annealed at 1020-1100°C and then be quenched in air or water quickly. 2205 duplex stainless steel can be readily welded.

Stainless Steel Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Stainless Steel Pipes, Tube Chemical Composition

Chemical Composition %

22.0-23.04.50-6.503.00-3.50.030 Max0.14-0.20
2.00 Max1.00 Max.030 Max.020 MaxBalance

Stainless Steel Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Stainless Steel Pipes, Tube Mechanical Properties

Duplex Stainless Steel
Melting Range,℃1450 ℃
Elongation %25 min.
Tensile Strength (Mpa)655
Yield Strngth (Mpa)450

Hardness (Brinell)

293 max

Metline Industries is a leading exporter and supplier of Duplex stainless steel seamless pipes and Duplex tubes manufactured as per ASTM A789/A790 available with complete certifications – Mill TC EN 10204 3.1, NABL approved lab test reports, PMI reports. We are stockholder and supplier of Duplex stainless steel pipes and ASTM A790 UNS S31803 tubes in a wide range sizes, surface treatment, and ASTM standards. UNS S31803 | UNS S32205 | WNR 1.4462 | Alloy 2205 Duplex.

Stainless Steel Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Seamless Pipes, Tubes / Tubing, and Butt Weld Fittings

Stainless Steel 2205 Duplex pipes and tubes are available in both seamless and welded form in OD and NB sizes. In addition to standard sizes, which are available in stock, our specialty is to manufacture and supply custom size SS Duplex cold drawn seamless tubes from our factory.

Stainless Steel 2205 Duplex pipes and tubes can be offered in random lengths of up to 6meters long or cut to a specific length as ordered. We also offer a complete range of stainless steel Duplex butt weld fittings including Duplex elbow, Duplex bends, Duplex tees, Duplex reducers and caps.

Seamless Duplex Pipes / Tubes: ASTM A 789 / 790, ASME SA 789 / 790

Welded Duplex Pipes / Tubes: ASTM A 789 / 790, ASME SA 789 / 790

Duplex Pipe Fittings & Flanges:  ASTM A 815, ASME SA 815

Why Choose Metline Industries for Stainless Steel Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Pipes & Tubes?

  1. Short Delivery Times – We are the quickest when it comes to servicing our customers with high quality stainless steel Duplex pipes and tubes.
  2. Custom Sizes: We can process stainless steel Duplex pipes and tubes to produce and supply either standard or non-standard stainless steel pipes.
  3. Best Prices: Our prices for stainless steel Duplex pipes are competitive.
  4. Quality Products: We make sure that our quality of SS Duplex pipes and tubes are compromised at any cost.
  5. Complete Certification: Our products are supplied with complete certification – Mill TC, Test Reports from NABL approved Labs, Hydro Testing.
  6. Pipe Fittings and Flanges: We are a manufacturer of Duplex forged pipe fittings, Duplex butt weld pipe fittings, Duplex compression ferrule fittings, and Duplex flanges, offering our customers the convenience to purchase all their requirements from one vendor.
  7. Complete Documentation: For our overseas customers in the Middle East, GCC region, South Amercia and the African region we offer our SS Duplex grade materials with all documents including Invoice, Packing List, Mill Test Certificates, Certificate of Origin and Bill of Lading

Stainless Steel Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Pipes and Tubes Available Product Forms

  1. SS 2205 Duplex Welded and Seamless Tubes, Pipes
  2. SS 2205 Duplex Hydraulic and Instrumentation Tubes
  3. SS 2205 Duplex Coiled Tubing
  4. SS 2205 Duplex Capillary Tubes
  5. SS 2205 Duplex Seam Welded and Cold Redrawn Pipe and Tubes
  6. SS 2205 Duplex Seam Welded, Cold Redrawn and Annealed Pipes and Tubes

Duplex Stainless Steel Pipes, Duplex Stainless Steel Seamless Tubes Value Added Processing Services

  1. UNS 31803 Duplex Stainless Steel Pipe Polishing
  2. UNS 31803 Duplex Stainless Steel Pipe Beveling
  3. Heat Treatment, Annealing, Pickling of SS UNS 31803 Duplex ERW, Seamless Pipes
  4. Ultrasonic Testing of SS UNS 31803 Duplex Pipes
  5. 100% X-Ray Welding for UNS 31803 Duplex Large Diameter Custom Size Stainless Steel Pipes
  6. Drawing Services
  7. Special Testing Requirements – Destructive Testing, Non Destructive Testing etc.

Production, Supply, Stock Range of Stainless Steel Duplex Pipes and Stainless Steel Duplex Tubes

  • Outside Diameter: 6.00 mm OD up to 250 mm OD, Sizes up to 12” NB available Ex-stock, OD Size Steel Tubes available Ex-stock
  • Thickness Range:  0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
  • Type: Seamless / ERW / Welded / Fabricated / CDW
  • Form: Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
  • Length: Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded
  • End Protection: Plastic Caps | Outside Finish: 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements
  • Delivery Condition: Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
  • Inspection, Test Reports: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports
  • Packing: Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
  • Specials: Sizes and Specifications other than above can be manufactured on request

Markings on Stainless Steel Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Seamless/Welded Pipes

The full identification of the pipe should be continuously marked down its whole length, including:

  1. Nominal Pipe Size (Nominal Bore)
  2. Schedule (Wall Thickness)
  3. Specification
  4. Grade
  5. Method of Manufacture (Seamless or Welded)
  6. Heat Number
  7. Manufacturer’s Name or Symbol

Export Destinations for Stainless Steel Duplex Pipes and Stainless Steel Duplex Tubes

Product reliability and performance has made Metline Industries a leading exporter and distributor of stainless steel Duplex pipes, stainless steel Dulex tubes and stainless steel Duplex tubing in India and international markets such as UAE, Bahrain, Indonesia, Malaysia, Mexico, Chile, Brazil, Peru, Nigeria, Kuwait, Jordan, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan, Saudi Arabia. Our high quality steel pipes, good customer service, and in house pipes and tubes processing capabilities have made us one of the emerging suppliers for steel pipes and tubes in Middle East countries including Bahrain, Cyprus, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, Turkey, United Arab Emirates and Yemen.

Domestic Supply Destinations for Stainless Steel Duplex Seamless Pipes and Stainless Steel Duplex ERW Pipes

Our products are supplied to all major Industrial areas and cities in India such as Mumbai, Delhi, Bangalore, Hyderabad, Ahmedabad, Chennai, Kolkata, Surat, Pune, Nagpur, Indore, Thane, Bhopal, Visakhapatnam, Vadodra, Nashik, Faridabad, Rajkot, Aurangabad, Ranchi, Coimbatore, Raipur, Mysore, Bhubaneswar, Salem, Bhilai, Bhiwandi, Bikaner, Mangalore, Kochi (Cochin), Bhavnagar, Tirupur, Ankleshwar, Assam, Siliguri, Jamshedpur, Warangal, Nellore, Agartala and Thoothukudi

Stainless Steel Duplex 2205, UNS S31803, UNS S32205, WNR 1.4462 Stainless Steel Pipes, Tube Stock and Supply Range

Sr. No.Product DescriptionOutside Diamter, OD (in mm)Wall Thickness, WT (in mm)
1Duplex Stainless Steel Round Pipe/Tube6mm – 630mm0.5mm-30mm
2Duplex Stainless Steel Square Pipe/Tube12.7mm* 12.7mm to 300mm* 300mm0.5mm-30mm
3Duplex Stainless Steel Rectangular Pipe/Tube10*20mm to 100*200mm0.5mm-30mm
4Duplex Stainless Steel Colour Coated Pipe/Tube6mm to 630mm0.5mm-30mm
5Duplex Stainless Steel Ornamental Tubes12.7mm to 76.2mm0.5mm-2.0mm
6Duplex Stainless Steel Electropolished Pipes/Tubes12.7mm to 250mm0.5mm-30mm
7Duplex Stainless Steel Slot Round Pipe/Tube12.7mm to 76.2mm0.5mm-2.0mm
8Duplex Stainless Steel Triangle Tube16mm to 85mm0.5mm-3.0mm
9Duplex Stainless Steel Hexagonal Tube13mm to 85mm0.5mm-2.0mm
10Duplex Stainless Steel Handrail Tube0.5mm-2.0mm
11Duplex Stainless Steel U Shaped Tube20mm to 200mm0.5mm-2.0mm
12Duplex Thin-Wall Stainless Steel Tube22mm*0.7mm to 108mm*2.0mm0.5mm-2.0mm
13Duplex Inner/Outside Polished Stainless Steel Tube, Pipes12.5mm to 203.2mm1.0mm – 5mm
14Duplex Stainless Steel Capillary Tube0.28mm to 10mm0.08mm – 1.2mm
15Duplex Stainless Steel Seamless Tube6mm to 430mm0.8mm – 30mm