Duplex Steel S31803 Pipe Spools are widely recognized for their excellent combination of mechanical strength and superior corrosion resistance, making them ideal for demanding industrial environments. At Adinox Overseas, we specialize as a leading Duplex Steel S31803 Pipe Spools manufacturer, delivering products that meet international quality standards. These pipe spools are fabricated using advanced techniques to ensure dimensional accuracy, long service life, and reliable performance in critical piping systems.
As a reputed Duplex Steel S31803 Pipe Spools exporter, Adinox Overseas supplies precision-engineered spools to global markets including oil & gas, petrochemical, and offshore industries. The duplex microstructure of S31803 provides exceptional resistance to stress corrosion cracking, making these spools suitable for high-pressure and high-temperature applications. Our export-quality pipe spools are tested thoroughly to ensure compliance with ASTM and ASME standards.
Being one of the most dependable Duplex Steel S31803 Pipe Spools suppliers, we understand the importance of consistent quality and timely delivery. Each spool is fabricated with carefully selected raw materials to maintain uniform wall thickness, smooth surface finish, and superior weld integrity. Our supply network enables us to fulfill bulk and customized requirements efficiently, without compromising on quality.
Adinox Overseas is also counted among reliable Duplex Steel S31803 Pipe Spools stockists, maintaining a ready inventory to meet urgent project demands. Our stocked spools are available in various sizes, configurations, and specifications, ensuring flexibility for diverse industrial applications. This availability helps reduce project downtime and supports fast-track installations.
| Material Grade | Duplex Stainless Steel S31803 (UNS S31803 / S32205 / Duplex 2205 / WNR 1.4462) |
|---|---|
| Product | Pipe spools fabricated from seamless or welded Duplex S31803 pipes, fittings & flanges |
| Material Description | 22% Cr duplex (austenitic–ferritic) stainless steel with high strength and excellent resistance to pitting, crevice and stress‑corrosion cracking in chloride‑bearing environments |
| Applicable Standards (typical) |
ASTM A790 / A790M (Seamless & Welded Duplex SS Pipe, UNS S31803 / S32205), ASTM A928 (EFW Duplex SS Pipe), ASTM A815 (Butt‑weld Fittings, UNS S31803 / S32205), ASTM A182 (Forged Fittings & Flanges, F51 / F60), ASME B36.19 / B36.10 (Pipe sizes & schedules), ASME B16.9 / B16.11 / B16.5 (Fittings & Flanges) |
| Size Range (NPS) | ½" – 24" (larger sizes on request / project basis) |
| Schedules | Sch 5S, 10S, 20, 40 / 40S, 80 / 80S, 160, XXS (as per design) |
| Pipe Type | Seamless / Welded (ERW / EFW) as specified |
| End Connections | Plain End (PE), Beveled End (BE), Threaded (NPT/BSP), Flanged, as per spool design |
| Fabrication | Cutting, fit‑up, welding, beveling, pickling/passivation, hydrotest as required by project specification |
| Welding | GTAW (TIG) / GMAW (MIG) / SMAW with qualified WPS/PQR & certified welders; matching duplex filler (e.g. ER2209 / E2209) as per spec |
| Heat Treatment | Base material solution annealed (typically 1040–1120 °C) and water quenched; no PWHT unless specified, to preserve duplex structure |
| NDT & Inspection (typical) | Visual, dimensional, hydrotest, radiography / DPI / PMI, ferrite testing as per client and code requirements |
| Corrosion Protection | Pickled & passivated, plastic end caps, suitable wrapping & packaging for shipment |
| Element | C | Mn | Si | P | S | Cr | Ni | Mo | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| Content (% by weight) | ≤ 0.030 | ≤ 2.00 | ≤ 1.00 | ≤ 0.030 | ≤ 0.020 | 21.0 – 23.0 | 4.5 – 6.5 | 2.5 – 3.5 | 0.08 – 0.20 | Balance |
| Property | Value (Metric) | Value (Imperial) | Remarks |
|---|---|---|---|
| Tensile Strength, min. | 620 MPa | 90 ksi | Longitudinal, at room temperature |
| Yield Strength, 0.2% offset, min. | 450 MPa | 65 ksi | Longitudinal, at room temperature |
| Elongation in 50 mm (2 in.), min. | 25 % | 25 % | Gauge length 50 mm (2 in.), longitudinal |
| Modulus of Elasticity (approx.) | 200 GPa | 29 × 106 psi | At 20 °C |
| Density (approx.) | 7.8 g/cm³ | 0.281 lb/in³ | Duplex stainless steel |
| Hardness (max, solution‑annealed) | ≤ 290 HB | ≈ 31 HRC | Maximum hardness per typical duplex specifications |
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