ASTM A789 Duplex Seamless Pipes and ASTM A790 Duplex Welded Tubes is one of the most recognized and widely used duplex stainless steel grades, with excellent general corrosion resistance and superiority over grade 304 or 316 in most environments.
We are India’s one of the most trusted supplier of various grades of duplex stainless steels including UNS 31803 Pipes (F51) and UNS 32205 (F60) Alloy 2205 Tubes. The ratio of ferrite to austenite in these ASTM A789 Duplex ERW Pipes and Tubes is approximately 50:50. The characteristic feature of ASTM A790 Duplex 2205 Tubing is their dual phase microstructure, comprising of approximately 50% of austenitic and 50% of ferrite. The yield strength of WNR 1.4462 Duplex Stainless Steel is typically two times that of austenitic stainless steel.
Duplex pipes and duplex plates are one of the key product items of Global Steel Alloys and are widely supplied from stock to various industries such as chemical, petrochemical, marine, oil and gas and transportation.
ASTM A789/A790 Duplex Seamless Pipes
ASTM A789/A790 Duplex Seamless Tubes
ASTM A789/A790 Duplex Stainless Steel Seamless Pipes, UNS S31803/S32205 Seamless Pipes, WNR 1.4462 Seamless Tubes Supplier
Production, Supply, Stock Range of Stainless Steel Duplex Pipes and Stainless Steel Duplex Tubes
Seamless Duplex Pipes / Tubes : ASTM A 789 / 790, ASME SA 789 / 790
Welded Duplex Pipes / Tubes : ASTM A 789 / 790, ASME SA 789 / 790
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
Stainless Steel Duplex 2205/ S31803, UNS S32205, WNR 1.4462 Stainless Steel Pipes, Tube Chemical Composition
| Cr | Ni | Mo | C | N |
| 22.0-23.0 | 4.50-6.50 | 3.00-3.50 | .030 Max | 0.14-0.20 |
| Mn | Si | P | S | Fe |
| 2.00 Max | 1.00 Max | .030 Max | .020 Max | Balance |
Stainless Steel Duplex 2205, UNS S31803 / S32205, WNR 1.4462 Stainless Steel Pipes, Tube Mechanical Properties
| Duplex Stainless Steel | |
| Density | 7.805 |
| Melting Range,℃ | 1450 ℃ |
| Elongation % | 25 min. |
| Tensile Strength (Mpa) | 655 |
| Yield Strngth (Mpa) | 450 |
| Hardness (Brinell) | 293 max |
Stainless Steel Duplex 2205, UNS S31803 / S32205, WNR 1.4462 Stainless Steel Pipes, Tube Stock and Supply Range
| Sr. No. | Product Description | Outside Diamter, OD (in mm) | Wall Thickness, WT (in mm) |
| 1 | Duplex Stainless Steel Round Pipe/Tube | 6mm – 630mm | 0.5mm-30mm |
| 2 | Duplex Stainless Steel Square Pipe/Tube | 12.7mm* 12.7mm to 300mm* 300mm | 0.5mm-30mm |
| 3 | Duplex Stainless Steel Rectangular Pipe/Tube | 10*20mm to 100*200mm | 0.5mm-30mm |
| 4 | Duplex Stainless Steel Colour Coated Pipe/Tube | 6mm to 630mm | 0.5mm-30mm |
| 5 | Duplex Stainless Steel Ornamental Tubes | 12.7mm to 76.2mm | 0.5mm-2.0mm |
| 6 | Duplex Stainless Steel Electropolished Pipes/Tubes | 12.7mm to 250mm | 0.5mm-30mm |
| 7 | Duplex Stainless Steel Slot Round Pipe/Tube | 12.7mm to 76.2mm | 0.5mm-2.0mm |
| 8 | Duplex Stainless Steel Triangle Tube | 16mm to 85mm | 0.5mm-3.0mm |
| 9 | Duplex Stainless Steel Hexagonal Tube | 13mm to 85mm | 0.5mm-2.0mm |
| 10 | Duplex Stainless Steel Handrail Tube | – | 0.5mm-2.0mm |
| 11 | Duplex Stainless Steel U Shaped Tube | 20mm to 200mm | 0.5mm-2.0mm |
| 12 | Duplex Thin-Wall Stainless Steel Tube | 22mm*0.7mm to 108mm*2.0mm | 0.5mm-2.0mm |
| 13 | Duplex Inner/Outside Polished Stainless Steel Tube, Pipes | 12.5mm to 203.2mm | 1.0mm – 5mm |
| 14 | Duplex Stainless Steel Capillary Tube | 0.28mm to 10mm | 0.08mm – 1.2mm |
| 15 | Duplex Stainless Steel Seamless Tube | 6mm to 430mm | 0.8mm – 30mm |
Stainless Steel Duplex 2205, UNS S31803 / S32205, WNR 1.4462 Pipes and Tubes Available Product Forms
SS 2205 Duplex Welded and Seamless Tubes, Pipes
SS 2205 Duplex Hydraulic and Instrumentation Tubes
SS 2205 Duplex Coiled Tubing
SS 2205 Duplex Capillary Tubes
SS 2205 Duplex Seam Welded and Cold Redrawn Pipe and Tubes
SS 2205 Duplex Seam Welded, Cold Redrawn and Annealed Pipes and Tubes
Origin of material (Make):
V & M France
Mannesmann Brazil
Dalmine Italy
Tubacex Spain
Nippon Steel & Sumitomo Metal, Japan
Sumitomo Japan
ArcelorMittal Romania
JFE Steel Corporation Japan
Ratnamani India
Rajendra Industrial Corporation India
Outokumpu Finland
Welspun India
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.
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