Stainless Steel 904L Seamless & Welded Pipes Spools manufacturer solutions offered by Adinox Overseas are designed for highly corrosive and demanding industrial environments. These pipes spools are produced using low carbon, high alloy austenitic stainless steel, which provides excellent resistance to sulfuric, phosphoric, and other aggressive acids. As a trusted manufacturer, Adinox Overseas ensures precise fabrication, dimensional accuracy, and superior surface finish suitable for critical applications.
As a reputed Stainless Steel 904L Seamless & Welded Pipes Spools exporter, Adinox Overseas supplies premium-quality piping spools to international markets with strict quality compliance. These pipes spools are widely used in chemical processing plants, oil & gas refineries, power generation units, and offshore installations. Our export-grade products undergo rigorous testing to ensure durability, pressure resistance, and long-term operational reliability.
Adinox Overseas is one of the reliable Stainless Steel 904L Seamless & Welded Pipes Spools suppliers in the global piping industry. The seamless and welded variants provide flexibility for both high-pressure and structural applications. Our supplied spools are known for excellent weldability, high mechanical strength, and resistance to chloride-induced stress corrosion cracking, making them ideal for harsh service conditions.
Being trusted Stainless Steel 904L Seamless & Welded Pipes Spools stockists, Adinox Overseas maintains a ready inventory in various sizes, schedules, and custom configurations. This allows us to meet urgent project requirements without compromising on quality. Each pipe spool is carefully inspected, packed, and delivered to ensure damage-free transportation and consistent performance at the installation site.
| Material Grade | Stainless Steel 904L (AISI 904L / UNS N08904 / WNR 1.4539) |
|---|---|
| Product | Pipe Spools (fabricated from seamless or welded stainless steel 904L pipes and fittings) |
| Material Description | High‑alloy, low‑carbon, superaustenitic stainless steel with high Ni, Cr, Mo & Cu for excellent resistance to reducing acids and chloride‑induced corrosion |
| Applicable Standards (typical) | ASTM A312 (Seamless & Welded Austenitic SS Pipes, Grade TP904L), ASTM A403 (Butt‑Weld Fittings, Grade WP904L), ASTM A182 (Forged Fittings & Flanges, F904L), ASME B36.19 (SS Pipe Sizes), ASME B16.9 / B16.11 / B16.5 (Fittings & Flanges) |
| Size Range (NPS) | ½" – 24" (larger sizes on request) |
| Schedules | Sch 5S, 10S, 20, 40 / 40S, 80 / 80S, 160, XXS (as per design) |
| Pipe Type | Seamless / ERW / EFW (as specified) |
| End Connections | Plain End (PE), Beveled End (BE), Threaded (NPT/BSP), Flanged, as per design |
| Fabrication | Cutting, fit‑up, welding, beveling, pickling/passivation, hydrotest as required |
| Welding | SMAW / GTAW (TIG) / GMAW (MIG); qualified WPS/PQR & certified welders; matching or over‑alloyed filler (e.g. 904L type) as per spec |
| Heat Treatment | Solution annealed (typically 1090 – 1175 °C) and rapidly cooled (water quench/air cool) as per ASTM / design code |
| NDT & Inspection (typical) | Visual, dimensional, hydrotest, radiography / DPI / PMI as per client specification |
| Corrosion Protection | Pickled & passivated, end caps, suitable wrapping & packaging for shipment |
| Element | C | Mn | Si | P | S | Cr | Ni | Mo | Cu | N |
|---|---|---|---|---|---|---|---|---|---|---|
| Content (% by weight) | ≤ 0.020 | ≤ 2.00 | ≤ 1.00 | ≤ 0.045 | ≤ 0.035 | 19.0 – 23.0 | 23.0 – 28.0 | 4.0 – 5.0 | 1.0 – 2.0 | ≤ 0.10 |
| Property | Value (Metric) | Value (Imperial) | Remarks |
|---|---|---|---|
| Tensile Strength, min. | 490 MPa | 71 ksi | Longitudinal, at room temperature |
| Yield Strength, 0.2% offset, min. | 220 MPa | 32 ksi | Longitudinal, at room temperature |
| Elongation in 50 mm (2 in.), min. | 35 % | 35 % | Gauge length 50 mm (2 in.), longitudinal |
| Modulus of Elasticity (approx.) | 195 GPa | 28.3 × 106 psi | At 20 °C |
| Density (approx.) | 8.0 g/cm³ | 0.289 lb/in³ | For 904L superaustenitic stainless steel |
| Hardness (typical, annealed) | ≈ 215 HB | ≤ 90 HRB | Typical value; check project / product specification |
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