Teerasil Plates and Fittings, headquartered in Bangkok, Thailand, is a reputable manufacturer and exporter of **Stainless Steel 309 pipe fittings** for use in corrosive and high-temperature applications. Stainless Steel 309 is one of the austenitic stainless steel alloys with good oxidation resistance and elevated temperature strength. Teerasil has a complete set of 309 pipe fittings—elbows, tees, reducers, and caps—produced to international standards such as ASTM A403. These fittings are suited for use in heat treatment, furnace installation, and chemical processing applications where scaling resistance and durability are critical.
| 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 pipe fittings have about 23–25% chromium and 12–15% nickel, which also offer outstanding oxidation resistance in continuous usage up to 1100°C. They exhibit tensile strength of approximately 520 MPa and yield strength around 205 MPa, with good weldability and ductility. The composition of the alloy also offers sulfidation resistance, carburization resistance, and thermal fatigue resistance, and thus is well suited for thermal cycling and aggressive chemical environments.
| 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 |
Teerasil Fittings one of the largest suppliers of Stainless Steel 309 Pipe Fittings in Bangkok, Thailand. 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 Thailand.
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 Teerasil 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 | – | – |
Stainless Steel 309 Pipe Fittings offer superior heat resistance, making them ideal for high-temperature applications up to 1000°C. Their excellent oxidation and corrosion resistance ensure durability in harsh environments, including those exposed to acids and high humidity. These fittings exhibit high tensile and yield strength, ensuring reliability in demanding industrial settings. Easy to fabricate and weld, they maintain structural integrity during thermal cycling. With good toughness and creep resistance, Stainless Steel 309 fittings are perfect for applications in furnaces, heat exchangers, and petrochemical industries, delivering long-lasting performance and versatility.
| 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@teerasilfittings.com.
Stainless Steel 309 pipe fittings are used extensively in industries that need high-temperature resistance and corrosion resistance. They are used abundantly in furnace components, heat exchangers, burners, and combustion chambers. The petrochemical, electric power generation, and refining industries depend on 309 fittings due to their capacity for high-heat tolerance and corrosive gases. 309 fittings deliver lasting, dependable service in severe thermal conditions, creating safety and efficiency in essential industrial processes.
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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