Stainless Steel 309 Pipe Fittings are corrosion-resistant, high-temperature components that are meant to be used in harsh industrial applications where resistance to heat and oxidation is essential. Produced by reliable manufacturers such as Devang Fittings in Kolkata, India, the fittings are designed to provide long-lasting performance in furnace components, heat exchangers, and flue gas circuits. Their good mechanical strength and superior scaling resistance make them ideal for thermal cycling service in petrochemical, chemical, and power generation applications.
| Specifications | : | ASTM A403 ASME SA 182 |
| Tube Size | : | 1/16”OD to 2”OD, 2mm OD to 50mm OD |
| Thread | : | NPT, BSP, BSPT, UNF, ISO, SAE etc. |
| Pressure Rating | : | 6000PSI for Stainless Steel, 300/1000/3000PSI for Brass |
Stainless Steel 309 is an austenitic alloy with around 22–24% chromium and 12–15% nickel, offering improved resistance to oxidation up to 1000°C. It has a tensile strength of around 550 MPa and yield strength around 205 MPa, showing good ductility, weldability, and toughness even at high temperature. The alloy remains stable in structure under extended heat exposure and offers resistance to sulfidation, carburization, and other types of high-temperature corrosion.
| Grade | C | Mn | Si | P | S | Cr | Ni | FE |
| SS 309 | 0.20 max. | 2.00 max. | 0.75 max. | 0.045 max. | 0.03 max. | 22.0 – 24.0 | 12.0 – 15.0 | Balance |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength | Elongation | Hardness (Brinell) |
| SS 309 | 7.8 g/cm3 | 1200 ℃ | 586 MPa | 310 MPa | 40 % | 202 |
Devang Fittings one of the largest suppliers of Stainless Steel 309 Pipe Fittings in Kolkata, India. We specialize in providing a wide range of high-quality, durable fittings for various industrial applications. Our inventory includes elbows, tees, reducers, couplings, and other essential fittings designed to offer exceptional corrosion resistance and strength. Stainless Steel 309 is known for its cost-effectiveness and excellent mechanical properties, making it ideal for industries such as construction, chemical processing, and food processing. With a commitment to customer satisfaction, timely delivery, and competitive pricing, we are the trusted choice for Stainless Steel 309 Pipe Fittings in the India.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless Steel 309 Pipe Fittings from Devang Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
| STANDARD | UNS | WNR. | AFNOR | EN | JIS | BS | GOST |
| SS 309 | S30900 | 1.4828 | – | – | SUS 309 | – | – |
| All Fittings | 90°and 45° Ells and Tees | Reducers and Lap Joint Stub | Caps | 180° Returns | Angularity Tol | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Pipe Plane Size (NPS) | Outside(1) Diameter at Bevel | Inside(1) Diameter at End | Wall(2) Thickness | Centre-to- End Dimension A,B,C,M | Overall Length L | Overall Length E | Centre-to- Centre Dimension O | Back-to- Face Dimension K | Alignment at Ends U | Nominal Pipe SIze | Off Angle Q | Off Angle P |
| 1/2 TO 2-1/2 | +1/16 | ±1/32 | Not less than 87-1/2% of Normal Thickness | ±1/16 | ±1/16 | ±1/8 | ±1/4 | ±1/4 | ±1/32 | 12 to 4 | 1/32 | 1/16 |
| -1/32 | 5 to 8 | 1/16 | 1/8 | |||||||||
| 3 TO 3-1/2 | ±1/16 | ±1/16 | ±1/16 | ±1/16 | ±1/8 | ±1/4 | ±1/4 | ±1/32 | 10 to 12 | 3/32 | 3/16 | |
| 4 | ±1/16 | ±1/16 | ±1/16 | ±1/16 | ±1/8 | ±1/4 | ±1/4 | ±1/32 | 14 to 16 | 3/32 | 1/4 | |
| 5 TO 8 | +1/32 | ±1/16 | ±1/16 | ±1/16 | ±1/4 | ±1/4 | ±1/4 | ±1/32 | 18 to 24 | 1/8 | 3/8 | |
| -1/16 | ||||||||||||
| 10 TO 18 | +1/16 | ±1/8 | ±3/32 | ±3/32 | ±1/4 | ±3/8 | ±1/4 | ±1/16 | All dimensions are in inches | |||
| -1/8 | ||||||||||||
| 20 TO 24 | +1/4 | ±3/32 | ±3/32 | ±3/32 | ±1/4 | ±3/8 | ±1/4 | ±1/16 | ||||
| -3/32 | ||||||||||||
Yes, custom sizes are available for Stainless Steel 309 Pipe Fittings to meet specific requirements. We offer tailored solutions to ensure precise fit and performance for various applications. For more information, please contact us at sales@devangfittings.co.in.
Stainless Steel 309 Pipe Fittings are widely employed in high-temperature service applications like industrial furnaces, boiler parts, incinerators, and exhaust systems. They are also used in chemical processing units wherein chemical gases and thermal fatigue resistance is needed. These fittings are a reliable, low-maintenance alternative for fluid and gas transportation systems exposed to severe thermal and corrosive stress, giving long operational life and stable performance in the toughest environments.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
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