Our Products Range
ASTM A 789 / A 790 Duplex Steel Pipes & Tubes Manufacturer, Exporter & Suppliers, Duplex Steel Seamless Pipes & Tubes, Duplex Steel Welded Pipes & Tubes, ERW Pipes Suppliers in India.
Duplex Steel Pipes & Tubes are engineered from a dual-phase microstructure of austenitic and ferritic stainless steel, providing exceptional strength, durability, and corrosion resistance. These pipes are well known for their superior performance in harsh environments where conventional stainless steel fails. Popular grades such as Duplex Steel 2205 Pipes & Tubes, Duplex Steel 2507 Pipes & Tubes, and Super Duplex Steel Pipes & Tubes offer outstanding resistance to chloride stress corrosion cracking, pitting, and crevice corrosion, making them suitable for marine, chemical, and offshore applications.
Duplex Steel Pipes & Tubes are engineered from a dual-phase microstructure of austenitic and ferritic stainless steel, providing exceptional strength, durability, and corrosion resistance. These pipes are well known for their superior performance in harsh environments where conventional stainless steel fails. Popular grades such as Duplex Steel 2205 Pipes & Tubes, Duplex Steel 2507 Pipes & Tubes, and Super Duplex Steel Pipes & Tubes offer outstanding resistance to chloride stress corrosion cracking, pitting, and crevice corrosion, making them suitable for marine, chemical, and offshore applications.
Manufacturer and supplier of Duplex Steel Welded Pipes, and subsea tubes in custom length and wall thickness
Our range includes multiple grades such as UNS S32205 Duplex Steel Pipes, UNS S31803 Duplex Pipes, Super Duplex UNS S32750 Pipes, and UNS S32760 Pipes. Each grade is carefully selected based on application requirements such as corrosion resistance, tensile strength, and temperature tolerance. The high chromium, molybdenum, and nitrogen content in Duplex Steel Pipes & Tubes provides excellent resistance against oxidation and chemical attack in aggressive industrial environments.
The Duplex Steel Pipes & Tubes we supply are widely used in oil and gas pipelines, petrochemical plants, heat exchangers, pressure vessels, desalination plants, and marine structures. Their high load-bearing capacity and resistance to seawater corrosion make them ideal for offshore platforms and shipbuilding industries. These pipes are also preferred for structural and mechanical applications due to their superior fatigue strength and low maintenance requirements.
We offer Duplex Steel Pipes & Tubes in various sizes, wall thicknesses, and schedules, including customized specifications as per client drawings and project needs. All products undergo strict quality testing such as hydro test, PMI test, ultrasonic test, and chemical & mechanical analysis. With competitive pricing, timely delivery, and complete mill test certificates (MTC), Eramets Steel Alloys Pvt Ltd stands as a trusted manufacturer and supplier of Duplex Steel Pipes & Tubes in Mumbai and across India.
We supply SS 304 round pipes, square pipes, and rectangular tubes for construction, fabrication, and machine systems. These DIN 1.4301 and UNS S30400 pipes fit complex layouts and tight spaces with ease. The low carbon composition improves weld strength and reduces cracking during setup. Builders trust these stainless steel 304 structural pipes for long service life.
Our SS 304 ERW pipes and tubes use high and low frequency resistance welding methods to create strong joints and smooth edges. Modern machines control wall thickness and surface finish with high accuracy. Each pipe passes tests for size, pressure, and surface quality before packing. Customers can order custom lengths, wall thicknesses, and finishes based on project needs.
Industries use stainless steel 304 pipes and tubes in food processing plants, chemical units, water supply lines, gas pipelines, and home appliances. These pipes stay clean, durable, and safe for daily operation. Clients value fair pricing, steady stock, and timely delivery from a trusted SS 304 pipes supplier and exporter. Contact us for technical support and bulk order solutions.
ASTM A789 Steel Pipe Specification
| Standard Specification | ASTM A790 ASME SA790, F51 |
| Manufacturing Type | Seamless / ERW / Welded / Fabricated / CDW / CDS / DOM / CEW / 100% X Ray Welded |
| Thickness Range | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXH, SCH XXS, SCH XS |
| Origin | Europe, USA, South Korea |
| Standard | SUS, JIS, AISI, ASTM, GB, DIN, EN |
| Value Added Services |
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| END | Plain End, Beveled End, Treaded ASTM A790 DSS Pipe |
| Marking |
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| Test Certificate |
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| Packaging | Packed in PE Fabric Bundles or ply wooden box wrapped in plastic or Standard seaworthy export packing or as per customers’ request |
| Port | Mumbai, India |
| Why choose Oshwin? |
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Duplex Steel Pipes Mechanical Properties
| Mechanical properties | Tensile,min,ksi[MPa] | Yield,min,ksi[MPa] | Elongation,%(min) | Hardness,HB(max) |
|---|---|---|---|---|
| S31803 | 90 [620] | 65 [450] | 25 | 290 |
| S32205 | 95 [655] | 65 [450] | 25 | 290 |
| S32750 | 116 [800] | 80 [550] | 15 | 300 |
| S32760 | 109 [750] | 80 [550] | 25 | 300 |
Duplex Stainless Pipe Chemical Composition
| Material | Composition % (Approx) | ||||||
|---|---|---|---|---|---|---|---|
| Cr | Ni | Mo | N | Mn | W | Cu | |
| 2101 LDX | 21.5 | 1.5 | 0.3 | 0.22 | 5 | – | – |
| DX2202 | 23 | 2.5 | 0.3 | 0.2 | 1.5 | – | – |
| RDN 903 | 20 | 1.8 | 0.2 | 0.11 | 4.2 | – | – |
| 2304 | 23 | 4.8 | 0.3 | 0.10 | – | – | – |
| 2205 | 22 | 5.7 | 3.1 | 0.17 | – | – | – |
| 2507 | 25 | 7 | 4 | 0.27 | – | – | – |
| Zeron 100 | 25 | 7 | 3.2 | 0.25 | – | 0.7 | 0.7 |
| Ferrinox 255/ Uranus 2507Cu | 25 | 6.5 | 3.5 | 0.25 | – | – | 1.5 |
Other Types of Duplex Steel Pipes & Tubes
| Duplex Steel Pipes & Tubes | Duplex Steel Pipes & Tubes |
|---|---|
| Duplex Steel Seamless Pipes & Tubes | Duplex Steel Welded Pipes & Tubes |
| Duplex Steel ERW Pipes & Tubes | Duplex Steel EFW Pipes & Tubes |
| Duplex Steel Cold Drawn Pipes & Tubes | Duplex Steel Hot Finished Pipes & Tubes |
| Duplex Steel Schedule 10 Pipes & Tubes | Duplex Steel Schedule 20 Pipes & Tubes |
| Duplex Steel Schedule 40 / 40S Pipes & Tubes | Duplex Steel Schedule 80 Pipes & Tubes |
| Duplex Steel Schedule 160 Pipes & Tubes | Duplex Steel XXS Pipes & Tubes |
| Duplex Steel Heavy Wall Pipes & Tubes | Duplex Steel Thin Wall Pipes & Tubes |
| Duplex Steel Polished Pipes & Tubes | Duplex Steel Bright Annealed Pipes & Tubes |
| Duplex Steel Pickled Pipes & Tubes | Duplex Steel Mill Finish Pipes & Tubes |
| Duplex Steel Large Diameter Pipes & Tubes | Duplex Steel Small Diameter Pipes & Tubes |
| Duplex Steel Round Pipes & Tubes | Duplex Steel Square Pipes & Tubes |
| Duplex Steel Rectangular Pipes & Tubes | Duplex Steel Hollow Section Pipes & Tubes |
