Duplex Steel Tube Manufacturer & Exporter
Leoscor Alloy Pipes is a reliable supplier, stockist, and exporter of high-quality Duplex Steel 2205 Tubes in Mumbai, India, serving customers across the Middle East, Southeast Asia, Africa, and other international markets. We maintain a ready inventory of ASTM A789 Duplex 2205 Tubes in grades UNS S31803 and UNS S32205, available in outside diameters ranging from 6 mm to 76 mm.
Every Duplex Steel 2205 Tube supplied by Leoscor Alloy Pipes is delivered with an EN 10204 3.1 Mill Test Certificate and a traceable heat number to ensure complete material identification, quality assurance, and compliance with industry requirements.
Duplex Steel 2205 Tubes for Corrosive Industrial Applications
Duplex 2205 Tubes are specially designed for applications where standard stainless steel grades such as 316L may not provide sufficient corrosion resistance. These tubes offer excellent resistance to chloride-induced pitting and crevice corrosion, making them an ideal choice for demanding environments involving seawater, cooling water, and process fluids containing high chloride levels.
Our Duplex Steel Tubes are widely used in heat exchangers and condensers where long-term reliability and resistance to aggressive environments are essential. They are commonly selected for industries such as offshore oil and gas, desalination plants, coastal power stations, chemical processing units, and marine applications.For grade selection or a quote, send us your requirement.
OUR RANGE OF DUPLEX STEEL TUBES
Duplex Steel Tubes
Why Buy Stainless Steel Tubes from Leoscor Alloy Pipes
Leoscor Alloy Tubes is a trusted stockist, distributor, and supplier of Stainless Steel Tubes from India, with decades of experience serving global industries. Our focus on quality, reliable supply, and customer satisfaction ensures dependable piping solutions.
Key advantages of choosing us:
- Extensive inventory of standard sizes and grades
- Reliable sourcing from reputed manufacturers
- Strict quality control and experienced professionals
- Strong logistics and timely delivery support
- Modern infrastructure with large storage capacity
- ISO 9001:2015 certified company
Contact us for Stainless Steel Tubes – info@leoscoralloypipes.com
Contact Us
What we hold in stock
| Specifications | Details |
|---|---|
| Standards | ASTM A789 (seamless and welded tube), and matching ASME SA specifications |
| Grades | UNS S31803, UNS S32205 (EN 1.4462) |
| OD Range | 6 mm to 76 mm |
| Wall Thickness | 0.8 mm to 6 mm, specified by BWG or direct mm callout |
| Forms | Seamless, Welded, Bright Annealed |
| Lengths | Single Random (5 to 7 m), Double Random (8 to 13 m), Cut to Length |
| End Finish | Plain End; U-bend fabrication on request |
| Certification | EN 10204 3.1 as Standard, 3.2 on Request |
When a duplex tube bundle is the right call
Cooling water chemistry on the shell side, not the process fluid on the tube side, usually decides this. This is where 2205 tube sits against 316L and super duplex.
| Grade | PREN (approx.) | Pick it when |
|---|---|---|
| 316L Tube | 24 to 26 | Cooling water is fresh or mildly brackish. The default for most shell-and-tube exchangers. |
| Duplex 2205 Tube | 34 to 36 | 316L tube bundles are pitting on the water side within a few years, or you need higher strength for a thinner-wall exchanger design. |
| Super Duplex Tube | 42 to 44 | 2205 tube is still pitting — open seawater intake, hot brine, or high-fouling coastal water. |
Sizes and wall thicknesses
Duplex 2205 tube is ordered by exact OD and wall thickness, same as stainless tube. Density is 7.80 g/cm³: kg per metre = (OD minus WT) x WT x 0.0246, both dimensions in mm.
| OD (mm) | OD (inch) | 16 BWG | 14 BWG | 12 BWG |
|---|---|---|---|---|
| 19.05 | 3/4″ | 1.65 | 2.11 | 2.77 |
| 25.4 | 1″ | 1.65 | 2.11 | 2.77 |
| 31.75 | 1 1/4″ | 1.65 | 2.11 | 2.77 |