In aggressive, chloride-rich, and high-pressure environments, standard stainless steels like 304 or 316 often fail prematurely due to pitting, crevice corrosion, or stress corrosion cracking (SCC). SS Duplex 2205 Welded Pipes solve these challenges head-on. As the most widely used duplex grade (UNS S32205 / S31803, EN 1.4462), Stainless Steel Duplex 2205 Welded Pipes combine roughly double the yield strength of austenitics with superior resistance to localized corrosion—delivering longer service life, thinner walls, and significant cost savings.
Stainless Steel Duplex 2205 Welded Pipes are manufactured using high-quality stainless steel materials and advanced welding technologies to ensure reliability in demanding environments. Due to their superior strength and resistance to stress corrosion cracking, Duplex 2205 Welded Pipes are commonly used in industries such as oil & gas, petrochemical, marine, power generation, and chemical processing.
Chemical Properties of SS Duplex 2205 Welded Pipes:
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤0.030 |
| Chromium (Cr) | 21.0-23.0 |
| Molybdenum (Mo) | 2.5-3.5 |
| Nickel (Ni) | 4.5-6.5 |
| Nitrogen (N) | 0.08-0.20 |
| Manganese (Mn) | ≤2.00 |
| Silicon (Si) | ≤1.00 |
| Iron (Fe) | Balance |
Mechanical Properties of Stainless Steel Duplex 2205 Welded Pipes:
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620-621 min |
| Yield Strength 0.2% (MPa) | 448-450 min |
| Elongation (% in 50mm) | 25 min |
| Hardness (HB max) | 293 |
| Hardness (HRC max) | 31 |
Physical Properties of Duplex 2205 SS Welded Pipes:
| Property | Value |
|---|---|
| Density | 7800 kg/m³ |
| Elastic Modulus | 190 GPa |
| Thermal Expansion (0-100°C) | 13.7 μm/m/°C |
| Thermal Expansion (0-315°C) | 14.2 μm/m/°C |
| Thermal Conductivity (100°C) | 19 W/m·K |
| Specific Heat (0-100°C) | 418 J/kg·K |
| Electrical Resistivity | 850 nΩ·m |
Product Specifications:
| Parameter | Details |
|---|---|
| Steel Grade | SS Duplex 2205 |
| Unit Pipe Length | 6 meter, 9 meter |
| Outer Diameter | 6 mm to 2000 mm |
| Finish | Mirror Polish, Matt Polish, without polish |
| Diameter | 4 mm – 450 mm |
| Thickness | 1 mm to 25 mm |
| Min. Order Quantity | 200 Kilogram |
Key Industries & Applications of Duplex 2205 Welded Pipes:
- Oil & Gas: Subsea flowlines and heat exchangers.
- Chemical Processing: Transporting chlorides and organic acids.
- Marine: Desalination plants and seawater cooling systems.
- Pulp & Paper: Digesters and bleach washers.
Ready to specify the right pipe for your next project?
Whether you need high-purity mirror finishes for food processing or heavy-wall pipes for offshore rigs, our range covers the full spectrum of Duplex 2205.
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