Duplex 2205 Stainless Steel Seamless Pipe ASME SA790 for Chemical Processing Oil
Duplex 2205 Stainless Steel Seamless Pipe ASME SA790 for Chemical Processing Oil
1. Product Description
Duplex stainless steel pipe is a two-phase (austenite + ferrite) tubular product offering an optimal combination of high strength and corrosion resistance. It is produced in seamless and welded forms per ASTM A789/A790, with standard grades including 2205 (S32205), 2507 (S32750), and 2304 (S32304). The material is delivered in solution-annealed and pickled condition, with full traceability and mill test certification.
2. Product Applications
| Sector | Typical Services |
| Offshore Oil & Gas | Subsea flowlines, topside piping, manifolds |
| Chemical Processing | Organic acids, chloride-bearing media, heat exchangers |
| Marine Engineering | Seawater systems, desalination, FPSO piping |
| Energy | Geothermal, FGD systems, hydrogen transmission |
| Pulp & Paper | Bleaching lines, digesters |
3. Product Advantages
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Yield strength approx. 2× that of 316L (450 MPa vs. 170 MPa for 2205)
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PREN 35–42+ provides superior pitting/crevice resistance
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Outstanding resistance to chloride SCC up to ~250°C
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Weight savings 30%+ vs. austenitic grades through reduced wall thickness
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Lower Ni content provides cost stability and nickel-price independence
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Good weldability without PWHT for thickness ≤ 20mm
4.Key Specifications
| Parameter | 2304 (S32304) | 2205 (S32205) | 2507 (S32750) |
| Cr % | 21.5–24.5 | 22.0–23.0 | 24.0–26.0 |
| Ni % | 3.0–5.5 | 4.5–6.5 | 6.0–8.0 |
| Mo % | 0.05–0.60 | 3.0–3.5 | 3.0–5.0 |
| N % | 0.05–0.20 | 0.14–0.20 | 0.24–0.32 |
| Yield Strength (MPa) | 400 | 450 | 550 |
| PREN | ~26 | ~35 | ~42+ |
| Max. Temp (°C) | 250 | 280 | 300 |
| MDMT | -40°C | -40°C | -40°C |
FAQ
1. Are you trading company or manufacturer ? We are manufacturer ,You can see the certification.
2.How long is your delivery time? Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ? Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ? Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
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